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Question 194189: Hi, here is a problem I've been stuck on, please help, if possible!
In 7 years, Maria will be 4 times as old as Angelica will be then. The sum of their ages is now 71. How old will each of them be in 5 years?
So far, I've got a chart like this:
Maria: In 7 years: 4(x+7). In 5 Years: x+5 (not sure if Maria is still 4 times older than Angelica in 5 years?)
Angelica: In 7 years: x+7. In 5 Years: x+5. =71
I put the equation together like this:
4(x+7) - (x+5)= 71
4(x + 28) - (x+5)= 71
4x + 28 - (x+5) = 71
4x - x +28 - 5 = 71
3x + 23 = 71
3x =48
X = 16
The solution I get is 16, but the answer at the back of the book says Angelica is 15, and Maria is 66! What did I do wrong, and what is the correct way to solve? Any help would be great, thanks!
Leanne Rain
Click here to see answer by stanbon(75887)

Question 194190: "Diophantus passed 1/6 of his life in childhood, 1/12 in youth and 1/7 more as a bachelor. Five years after his marriage, was born a son who died 4 years before his father, at 1/2 his father's final age." How old was Diophantus when he died?
Click here to see answer by ankor@dixie-net.com(22740)

Question 194778: A father is three times as old as his son. After fifteen years, the father will be twice as old as his son's age at that time. Therefore, the father's current age is?
1. 4
2. 8
3. 16
4. 32
5. 64
Click here to see answer by josmiceli(19441)

Question 195420: John is now four times as old as Annie was six years ago. How old is Annie today if John is 20 years old?
A)8
B)11
C)12
D)14
Click here to see answer by anantha(86)

Question 195419: if Sam were twice as old as he is.he would be 40 years older than Jim. if Jim is 10 years younger than Sam, how ols is Sam?
Click here to see answer by ankor@dixie-net.com(22740)

Question 195993: mary is six years older than sue. in two years, mary will be twice as old as sue. find their present ages.
Click here to see answer by jojo14344(1513)

Question 196107: Lee is 7 years older than phil. 11 years ago Lee was twice as old as phil was then. find their ages now
Click here to see answer by stanbon(75887)

Question 196107: Lee is 7 years older than phil. 11 years ago Lee was twice as old as phil was then. find their ages now
Click here to see answer by josmiceli(19441)

Question 196107: Lee is 7 years older than phil. 11 years ago Lee was twice as old as phil was then. find their ages now
Click here to see answer by solver91311(24713)

Question 196314: twice a number decreased by 8 is equal to the number increased by 10. find the number.
Click here to see answer by Mathtut(3670)

Question 196303: when 63 is added to 1 fifth off my number the result is double my number
Click here to see answer by Mathtut(3670)

Question 196407: Please help on this word problem.

the length of the rectangle is three less than twice the width. If the perimeter is 36 cm, find the dimensions.

thank you
Click here to see answer by vleith(2983)

Question 197512: michael is 4 years older than tom. 5 years ago michael was twice toms age how old is tom now
Click here to see answer by ankor@dixie-net.com(22740)

Question 197358: In 1994, the life expectancy of males in a certain country was 69.6 years. In 1998, it was 73.0 years. Let E represent the life expectancy in year t and let t represent the number of years since 1994.
E(t)=_t+_
Use the function to predict the life expectancy of males in 2008

Click here to see answer by ankor@dixie-net.com(22740)

Question 197599: A wizard was asked how old he was. He replied in a riddle: "I am still very young as wizards go.I am only three times my son's age. My father is 40 years more than twice my age. Together the three of us are a mere 1240 years old." How old is the wizard? Explain and show all work to recieve full credit.
This is how i set it up but i have no idea if this is right and i am having trouble solving this equation if it is the correct equation to solve this problem.
1240=3x+2y+40
Click here to see answer by stanbon(75887)

Question 197695: This is Probability/Hypothesis testing in Statistics. Can someone help me with this. I have part of the paper done, but can't figure out what to write for the last step.
Click here to see answer by stanbon(75887)

Question 197869: Anne's age is seven-tenths of Bills age. In 4 years Anne's age will be eight-elevenths of Bill's age. How old is Bill now?
Click here to see answer by ankor@dixie-net.com(22740)

Question 197870: The ten's digit of a two digit number is 3 more than the unit's digit. The number is eight more than six times the sum of the digits. Find the number.
Click here to see answer by josmiceli(19441)

Question 197933: Mrs. Santos was 25 years old when her eldest daughter was born. Mrs. Santos' age now is 10 years more than 4 times her daughter's present age. What are their present ages?
I need an answer within an hour. I will be grateful if this will be answered. Thanks
Click here to see answer by stanbon(75887)

Question 198188: A man and his brother have a combined age of 162 years. 49 years ago, the man was 7 times older than his brother. How old is the man? How old is the brother?
Click here to see answer by edjones(8007)

Question 198526: Five years from now, A will be 4/5 as old as B; five years ago, he was 2/3 as old then. Find their present ages.
Click here to see answer by ankor@dixie-net.com(22740)

Question 198528: A man being asked his age replied: "If you take one year from my present age, the result will be three times my son's now, and three years ago, my age was twice what his will be in 5 years." Find the present age of the man.
Click here to see answer by ankor@dixie-net.com(22740)

Question 198556: A man being asked his age replied: "If you take one year from my present age, the result will be three times my son's now, and three years ago, my age was twice what his will be in 5 years." Find the present age of the man.
Click here to see answer by arallie(162)

Question 198921: This year, your brother Jack will be 2 years from being
twice as old as your sister Jen. The sum of Jack�s age and
three times Jen�s age is 66. How old is Jen?
Click here to see answer by josmiceli(19441)

Question 199574: a man is 5 times as old as his son. The difference in thier ages is 32 years. Find the man's age in 12 years' time
Click here to see answer by tutorvolunteer(9)

Question 199567: A man is twice the age his wife was when he was the age she is now. When she is the age that he is now, the sum of their ages will be ninety-nine. What age are the man and woman?
We were told that the man and woman's ages were whole numbers, and when you use the numbers, twenty and fourty, you end up with one hundred.
This question was provided by a friend and the number combinations we have used are getting us nowhere.

Click here to see answer by Edwin McCravy(20059)

Question 200137: if sum of the ages of a family of six is 183 years . what will the sum of their ages be in 15 years ?
Click here to see answer by ankor@dixie-net.com(22740)

Question 200414: One hose can fill a goldfish pond in 45 minutes. Using two different hoses together, the same pond can be filled in 20 minutes. How long would it take to fill the pond using only the second hose?
Click here to see answer by vleith(2983)

Question 200413: The distance(s) a ball will roll down an inclined plane is directly proportional to the square of time(t). If the ball rolls 5 ft. in 1 sec. how far will it roll in 4 sec.?
Click here to see answer by solver91311(24713)

Question 200412: An experienced roofer can roof a house in 26 hours. A beginning roofer needs 39 hours to complete the same job. How long does it take to do the job if the two work together?
Click here to see answer by solver91311(24713)

Question 200810: silly sampson was born in 1966. in five years he will be 16 years older than superficial stephen . in what year was superficial stephen born ?
Click here to see answer by vleith(2983)

Question 201310: The sum of Richard's age and Ruel's age is 60. Nine years ago, Richard was twice as old as Ruel, then how old is Ruel? (pls. include o how you solved the problem)

Click here to see answer by nerdybill(7384)

Question 201311: A father is 8 times as old as his son and 4 times as old as his daughter. If the daughter is 5 years older than the son;how old is each?
Click here to see answer by ptaylor(2198)

Question 201494: Would you please help me identify the equation for the following problem:
"Together we are 98 years old. I am twice as old as you were when I was as old as you are now."
I understand A+B=98, but cannot figure the second statement.
Thank you,
Caroline

Click here to see answer by vleith(2983)

Question 201514: An eight-year-old boy named Nathan wants to compare his age with that of his mother and grandfather. His mother is exactly four times his age and his grandfather is exactlyseven times his age. How old is Nathan's mother? How old is his grandfather?
Click here to see answer by rfer(16322)

Question 201528: Two years from now, Jorge will be 3 times as old as Maria is now, in ten years, Jorge will be four times as old as Maria is now. What are Jorge's and Maria's current age?
Click here to see answer by solver91311(24713)

Question 201573: Kelly currently has 2 credits towards a free meal at her favorite restaurant. to receive a free meal, she must accumulate 20 credits. If she gain 3 credits per week, will she have enough credits to get a free meal on her b-day in 5 weeks?
Click here to see answer by rfer(16322)

Question 193518: If Jason's teacher is 28 years old and Jason is 8 years old ,what fraction of Jason's age is his teacher's age?
Click here to see answer by jjohn666(2)

Question 201731: my father and father-in-law turned in 60 and 64 this year in october. in what year was my father twice the age of my father-in-law ?
Click here to see answer by solver91311(24713)

Question 201720: sue is now seven times old as louise. in six years sue will be five time as old as louise. find the present age of each one.
Click here to see answer by stanbon(75887)

Question 201720: sue is now seven times old as louise. in six years sue will be five time as old as louise. find the present age of each one.
Click here to see answer by Earlsdon(6294)

Older solutions: 1..45, 46..90, 91..135, 136..180, 181..225, 226..270, 271..315, 316..360, 361..405, 406..450, 451..495, 496..540, 541..585, 586..630, 631..675, 676..720, 721..765, 766..810, 811..855, 856..900, 901..945, 946..990, 991..1035, 1036..1080, 1081..1125, 1126..1170, 1171..1215, 1216..1260, 1261..1305, 1306..1350, 1351..1395, 1396..1440, 1441..1485, 1486..1530, 1531..1575, 1576..1620, 1621..1665, 1666..1710, 1711..1755, 1756..1800, 1801..1845, 1846..1890, 1891..1935, 1936..1980, 1981..2025, 2026..2070, 2071..2115, 2116..2160, 2161..2205, 2206..2250, 2251..2295, 2296..2340, 2341..2385, 2386..2430, 2431..2475, 2476..2520, 2521..2565, 2566..2610, 2611..2655, 2656..2700, 2701..2745, 2746..2790, 2791..2835, 2836..2880, 2881..2925, 2926..2970, 2971..3015, 3016..3060, 3061..3105, 3106..3150, 3151..3195, 3196..3240, 3241..3285, 3286..3330, 3331..3375, 3376..3420, 3421..3465, 3466..3510, 3511..3555, 3556..3600, 3601..3645, 3646..3690, 3691..3735, 3736..3780, 3781..3825, 3826..3870, 3871..3915, 3916..3960, 3961..4005, 4006..4050, 4051..4095, 4096..4140, 4141..4185, 4186..4230, 4231..4275, 4276..4320, 4321..4365, 4366..4410, 4411..4455, 4456..4500, 4501..4545, 4546..4590, 4591..4635, 4636..4680, 4681..4725, 4726..4770, 4771..4815, 4816..4860, 4861..4905, 4906..4950, 4951..4995, 4996..5040, 5041..5085, 5086..5130, 5131..5175, 5176..5220, 5221..5265, 5266..5310, 5311..5355, 5356..5400, 5401..5445, 5446..5490, 5491..5535, 5536..5580, 5581..5625, 5626..5670, 5671..5715, 5716..5760, 5761..5805, 5806..5850, 5851..5895, 5896..5940, 5941..5985, 5986..6030, 6031..6075, 6076..6120, 6121..6165, 6166..6210, 6211..6255, 6256..6300, 6301..6345, 6346..6390, 6391..6435, 6436..6480, 6481..6525, 6526..6570, 6571..6615, 6616..6660, 6661..6705, 6706..6750, 6751..6795, 6796..6840, 6841..6885, 6886..6930, 6931..6975, 6976..7020, 7021..7065, 7066..7110, 7111..7155, 7156..7200, 7201..7245, 7246..7290, 7291..7335, 7336..7380, 7381..7425, 7426..7470, 7471..7515, 7516..7560, 7561..7605, 7606..7650, 7651..7695, 7696..7740, 7741..7785, 7786..7830, 7831..7875, 7876..7920, 7921..7965, 7966..8010, 8011..8055, 8056..8100, 8101..8145, 8146..8190, 8191..8235, 8236..8280, 8281..8325, 8326..8370, 8371..8415, 8416..8460, 8461..8505, 8506..8550, 8551..8595, 8596..8640, 8641..8685, 8686..8730, 8731..8775, 8776..8820, 8821..8865, 8866..8910, 8911..8955, 8956..9000, 9001..9045, 9046..9090, 9091..9135, 9136..9180, 9181..9225, 9226..9270, 9271..9315, 9316..9360, 9361..9405, 9406..9450, 9451..9495, 9496..9540, 9541..9585, 9586..9630, 9631..9675, 9676..9720, 9721..9765, 9766..9810, 9811..9855, 9856..9900, 9901..9945, 9946..9990, 9991..10035, 10036..10080, 10081..10125, 10126..10170, 10171..10215, 10216..10260, 10261..10305, 10306..10350, 10351..10395, 10396..10440, 10441..10485, 10486..10530, 10531..10575, 10576..10620, 10621..10665, 10666..10710, 10711..10755, 10756..10800, 10801..10845, 10846..10890, 10891..10935, 10936..10980, 10981..11025, 11026..11070, 11071..11115, 11116..11160, 11161..11205, 11206..11250, 11251..11295, 11296..11340, 11341..11385, 11386..11430, 11431..11475, 11476..11520, 11521..11565, 11566..11610, 11611..11655, 11656..11700, 11701..11745, 11746..11790, 11791..11835, 11836..11880, 11881..11925, 11926..11970, 11971..12015, 12016..12060, 12061..12105, 12106..12150, 12151..12195, 12196..12240, 12241..12285, 12286..12330, 12331..12375, 12376..12420, 12421..12465, 12466..12510, 12511..12555, 12556..12600, 12601..12645, 12646..12690, 12691..12735, 12736..12780, 12781..12825, 12826..12870, 12871..12915, 12916..12960, 12961..13005, 13006..13050, 13051..13095, 13096..13140, 13141..13185, 13186..13230, 13231..13275, 13276..13320, 13321..13365, 13366..13410, 13411..13455, 13456..13500, 13501..13545, 13546..13590, 13591..13635, 13636..13680, 13681..13725, 13726..13770, 13771..13815, 13816..13860, 13861..13905, 13906..13950, 13951..13995, 13996..14040, 14041..14085, 14086..14130, 14131..14175, 14176..14220, 14221..14265, 14266..14310, 14311..14355, 14356..14400, 14401..14445, 14446..14490, 14491..14535, 14536..14580, 14581..14625, 14626..14670, 14671..14715, 14716..14760, 14761..14805, 14806..14850, 14851..14895, 14896..14940, 14941..14985, 14986..15030, 15031..15075, 15076..15120, 15121..15165, 15166..15210, 15211..15255, 15256..15300, 15301..15345, 15346..15390, 15391..15435, 15436..15480, 15481..15525, 15526..15570, 15571..15615, 15616..15660, 15661..15705, 15706..15750, 15751..15795, 15796..15840, 15841..15885, 15886..15930, 15931..15975, 15976..16020, 16021..16065, 16066..16110, 16111..16155, 16156..16200, 16201..16245, 16246..16290, 16291..16335, 16336..16380, 16381..16425, 16426..16470, 16471..16515, 16516..16560, 16561..16605, 16606..16650, 16651..16695, 16696..16740, 16741..16785, 16786..16830, 16831..16875, 16876..16920, 16921..16965, 16966..17010, 17011..17055, 17056..17100, 17101..17145, 17146..17190, 17191..17235, 17236..17280, 17281..17325, 17326..17370, 17371..17415, 17416..17460, 17461..17505, 17506..17550, 17551..17595, 17596..17640, 17641..17685, 17686..17730, 17731..17775, 17776..17820, 17821..17865, 17866..17910, 17911..17955, 17956..18000, 18001..18045, 18046..18090, 18091..18135, 18136..18180