Questions on Word Problems: Linear Equations And Systems Word Problems answered by real tutors!

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Question 626904: WRITE THE FUNCTION EXPRESSING F IN TERMS OF C.
I WANT TO KNOW THE ANSWER...CAN YOU HELP ME NOW?PLEASE?????IM BEGGING...

Click here to see answer by solver91311(16877)

Question 627252: Twenty children were sharing equally the cost of a present for their teacher.When four of the children decided not to contribute, each of the other children had to pay 1.50 more.How much did the present cost, in Naira?
Click here to see answer by ankor@dixie-net.com(15649)

Question 627321: Please help me with this equation: The supply and demand equations respectively, 3q-200p+1800=0 and 3q+100p-1800=0. Where p represents the price per unit and q represents the number of units per time period. Find the equilibrium price.
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Question 627207: Some students set for a test. p students average mark was 70 and n students average mark was 92. When the test scores are added the average is 86. Find p and n.
Click here to see answer by MathTherapy(1423)

Question 627483: To estimate animal populations, biologists count the total number of animals in a small section of a habitat. The total population of animals is directly proportional to the size of the habitat (in acres) polled.
a. Write an equation using only one variable that could be used to solve for the constant of variation k.
b. A biologist counted 12 white tail deer in a 100-acre parcel of land in a nature preserve. Find the constant of variation k.
c. If the entire nature preserve is 2,500 acres, then what is the total white tail deer population in the preserve? Describe how you arrived at your answer.
Click here to see answer by stanbon(57328)

Question 627570: Formulate a system of equations for the situation below and solve.
Cantwell Associates, a real estate developer, is planning to build a new apartment complex consisting of one-bedroom units and two- and three-bedroom townhouses. A total of 168 units is planned, and the number of family units (two- and three-bedroom townhouses) will equal the number of one-bedroom units. If the number of one-bedroom units will be 3 times the number of three-bedroom units, find how many units of each type will be in the complex.

one-bedroom units ____? units
two-bedroom townhouses _____? units
three-bedroom townhouses _______? units

Click here to see answer by ewatrrr(10682)

Question 627692: Thirty minutes after a father left for work on the bus, he noticed that he had left his briefcase at home. His son left hom driving at 40mph, to catch the bus that was traveling at 24mph. How long did it take the son to catch the bus?
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Question 627709: A family has two cars. The first car has a fuel efficiency of miles per gallon of gas and the second has a fuel efficiency of miles per gallon of gas. During one particular week, the two cars went a combined total of miles, for a total gas consumption of gallons. How many gallons were consumed by each of the two cars that week?
Click here to see answer by richwmiller(9135)

Question 627819: How do you write a system of linear equations in two variables? Explain this in words and by using mathematical notation in an equation.
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Question 627992: Two snails are 264 centimeters apart. They craw toward each other at rates that differ by 6 centimeters per minute. After 22 minutes they meet. How fast is each snail crawling?
Nkenge
Click here to see answer by dfrazzetto(277)

Question 628326: please , i find it difficult deducing the equation in this problem
Timmy enjoys playing old-fashioned video games. He found 3 game systems on eBay and wants to purchase a Nintendo game system, an Atari game system, and a Sega arcade game system. The Sega system costs $600 more than the sum of the Atari and the Nintendo systems. All together, the three game systems cost $11,000. The Atari system costs $1100 less than the Nintendo. Determine how much Timmy paid for each game system.
Click here to see answer by Earlsdon(6287)

Question 628420: Tickets to the school’s dinner theatre cost $6 for children and $9 for adults. 225 tickets were sold for a total of $1875
how many children attended?
how many adults attended
Click here to see answer by Maths68(1474)

Question 628464: Here is my question....How would I know, in a linear story problem, that I would need to use X and Y variables or I could use only X variable? I cannot seem to grasp the relationships in the problems that would tell me to only use X or to use X and Y. And my instructor was not able to explain it either. Thank you for your help.
Click here to see answer by jim_thompson5910(28593)

Question 628550: The cost of renting a certain type of car is $50 per day plus $0.07 per 22) mile. A linear function that expresses the cost C of renting a car for one
day as a function of the number of miles driven x is C(x) = 0.07x + 50.
How many miles were driven if the rental cost for one day is $75.90?
Click here to see answer by ewatrrr(10682)

Question 628549: The cost of renting a certain type of car is $36 per day plus $0.11 per 21) mile. A linear function that expresses the cost C of renting a car for one
day as a function of the number of miles driven x is C(x) = 0.11x + 36.
What is the rental cost for one day if 200 miles are driven?
Click here to see answer by ewatrrr(10682)

Question 628564: sum of 800 is in the denominatiom of rs 10 and rs 20 if total no of notes be 50 fund the no of noets of each type
Click here to see answer by Maths68(1474)

Question 628752: a motor boat can travel 9 miles/h up a river, and back downstream at 15 miles/h. find the rate of the motorboat in still water and the rate of the water current?
Click here to see answer by josmiceli(9672)

Question 628834: The height of a new building in China will be 859 feet. Neglecting air resistance, the height of an object dropped from this building at time t seconds would be given by the polynomial -16t^2+859. Find the height of the object at time t=4 seconds.
Click here to see answer by richwmiller(9135)

Question 628945: the sum of squares of ages of my niece aubrey and brenn and my nephew cole is a 102. If my nephew is 5 years younger than his twin sisters , then how old are the children?
Click here to see answer by richwmiller(9135)

Question 629156: If I have a presxription for Sixty pills and the total comes to $33.19 how much is it per pill in the prescripton?
Click here to see answer by 303795(595)

Question 629167: ONE NUMBER EXCEEDS ANOTHER BY 5. TWO TIMES THE SMALLER NUMBER DIMINISHED BY THE LARGER NUMBER EQUALS 9. FIND THE TWO NUMBERS?
Click here to see answer by 303795(595)

Question 629235: When a two digit number is divided by the sum of its digits the quotient is8.If the ten's digit is diminished by three times the unit's digit,the remainder is 1.What is the number?
Click here to see answer by lwsshak3(6494)

Question 629344: Nichole's cellphone company charges a base price of $20.00 for 100 minutes and $0.10 per minute over 100 minutes. If the amount of her bill is $50.00 during one month, how many minutes did she use?
Click here to see answer by richwmiller(9135)

Question 629386: How many gallons of 30% alcohol solution and 45% alcohol solution must be mixed to get 9 gallons of 35% alcohol solution ?
How much of each solution is used, 30% and 45% ?
I really do not understand how to work this problem out, I'm confused and my answers don't make sence.
Click here to see answer by Alan3354(30993)

Question 629384: If the larger of two numbers is 3 more than 3 times the smaller. If the smaller number is subtracted from the larger and the result is 15, what are the two numbers ?
I am having the hardest time with these word problems no matter what I do I get the wrong answer, Please help me ?
Click here to see answer by josmiceli(9672)

Question 629625: If a object is propelled at a velocity of 64 ft/sec from a height of 192 ft., when will it hit the ground? HINT: the formula will be h(t)= -16t^(2)+64t+192
Click here to see answer by nerdybill(6958)

Question 629810: A company orders two types of parts , brass and steel . One shipment contains 3 brass and 10 steel parts and costs $48. A second shipment contains 7 brass and 4 steel parts and costs $54. Find the cost of each type of part .
Click here to see answer by solver91311(16877)

Question 629961: Hi!!!
I need help with the following question..
"Is the ordered pair a solution of the equation?
y=x +16; (-1, -17)
a.yes
b.no
please help step by step... i would like to know now to do it and also learn
thanks!!
Click here to see answer by josmiceli(9672)

Question 630034: The cost for an exterminator to treat a 1500 sq ft home is $65.00 and the cos for a 3000 sq ft home is $80.00.
What is the linear equation?
What is the slope?
What is the y-intercept?
How much would it cost for a 2100 sq ft home?
Click here to see answer by ewatrrr(10682)

Question 630271: my house is worth 185,500 that's 15% of the original price, what was the original price.
Click here to see answer by 55305(76)

Question 630304: In an electrical circuit, the current passing through a conductor varies inversely with the resistance. Suppose that when the current is 11A (amperes), the resistance is 20 ohms. What is the current when the resistance is 22 ohms?
Click here to see answer by josmiceli(9672)

Question 630491: Joy is an instructional assistant in one of the college labs. She is on a very tight budget. She loves Jamaican Blue Mountain coffee, but it costs $14 a pound. She decides to blend this with regular coffee beans that costs $2.13 a pound. If she spends $14.25 on 2 pounds of coffee, how many pounds of each did she purchase?
Click here to see answer by richwmiller(9135)

Question 630745: How many mL of 10% HCL solution should be combined with 60% HCL solution in order to get a 50 mL 30% HCL solution?
Click here to see answer by nerdybill(6958)

Question 630771: Can someone please help me with a word problem?
Here is the word problem that I am trying to solve:
"A tugboat goes 180 miles upstream in 10 minutes. The return trip downstream takes 5 minutes. Find the speed of the tugboat without a current and the speed of the current."
I assigned the x variable to the tugboat and the y variable to the current. It makes sense to me that if I divide 180 by 10, the speed of the tugboat without the current would be 18 mph. It also makes sense to me that if the tugboat made the return trip downstream in half the time, the current needs to be moving at the same speed as the tugboat to increase the speed of the boat by 2. If the boat made the trip in half the time, it had to be moving twice as fast. We are working on linear equations in two variables, and I am having difficulty writing two equations to solve this problem. If I knew the two equations, I would have no trouble solving them. Thanks!
Click here to see answer by richwmiller(9135)

Question 630708: one number is twice the another.the second number increased by 5 bears a ratio 2:3 to the first number increased by 3. find the numbers?
Click here to see answer by ankor@dixie-net.com(15649)

Question 630926: the cost of 5 feet of chain is $2.00, what length of chain can be purchased with $7.50
Click here to see answer by nerdybill(6958)

Question 631012: car uses 15 liters of gasoline to travel 200 kilometer at that rate how much gasoline will his car use travel 300 kilometer?

Click here to see answer by nerdybill(6958)

Question 631304: Find the slope of a line perpendicular to the line passing through the given two points.
(0, 0) and (9, -2)
Click here to see answer by lwsshak3(6494)

Question 631353: Hi, everyone
A sum of Rs 2000 is in the denomination of Rs.50 and Rs.10 notes. if the total number of notes be 80. Find the number of notes of each type.
Click here to see answer by sachi(392)

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