Questions on Algebra: Proportions answered by real tutors!

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Question 834795: What is the proportion of 1 over 5, 4 over 20?
Click here to see answer by tommyt3rd(5050)

Question 832399: the scale of a map is one half in: 8 mi. what's the actual distance for each map distance for 2 in.
Click here to see answer by tommyt3rd(5050)

Question 864331: Please help me on this proportion word problem:
You are enlarging a photograph to make a poster.
The poster will be similar to the original photograph.
The photograph is 6 inches tall and 4 inches wide.The poster
will be 2.5 feet wide.How tall will the poster be? Find the
poster's perimeter.
Click here to see answer by LinnW(1048)

Question 865237: You have a liquid that contains 12mg/10ml. What percent is this liquid? i know I need to convert mg to g per 100ml so 12 mg =.012g and the answer is .12% but not sure how to get this answer.
Click here to see answer by josgarithmetic(39617)

Question 865862: a/b=c/d then value of (a(squared)+b(squared))/(c(squared)+d(squared))=
Click here to see answer by ewatrrr(24785)

Question 866338: The proportion of correct responses after n tries on Mr. D�s test is modeled by the equation: P = 100/1+e^ -0.8n+2. Find the proportion of correct responses after 3 tries. _______________
Click here to see answer by Fombitz(32388)

Question 866861: What is the answer to the following proportion:
x + 4 over x + 1 = 2x over 12 ?
The answer I got was: (x - 8)(x + 3). Our book says the answer should be 8.
Thank you, Bill Whitener
Click here to see answer by Fombitz(32388)

Question 867677: 0.7 = 3.6
9.8. X
Need to find value of X
My answer is 50.40
Click here to see answer by Alan3354(69443)

Question 867931: The value of d varies jointly as the value of x and the value of w. d=90 x=4 w=3. Find the value of d when x=2 and w=5.
Click here to see answer by josgarithmetic(39617)

Question 867928: How can I solve the following proportion x-3/4=x+3/7
Click here to see answer by josgarithmetic(39617)

Question 867929: Complete each statement
If 5/x=9/y then 9+5/5=?
Click here to see answer by josgarithmetic(39617)

Question 868091: a blue neon light blinks every 4 seconds. a red one blinks every 5 seconds. while a green one blinks every 6 seconds. how many times will they blink together in half an hour.
Click here to see answer by htmentor(1343)

Question 871737: On a map the distance between 2 towns is 4 3/4 inches. The actual distance between the towns is 380 miles. What is the scale of the map?
Click here to see answer by ewatrrr(24785)

Question 872348: Omar buys a present for Alex , bukki and Chris. The present for Alex costs twice as much as the present for Chris , but costs only three quarters as much as the present for bukki. Write a ratio of the costs for the gifts

Click here to see answer by josmiceli(19441)

Question 872584: How many cm are in a km?
100cm/1 m 1000 m/1 km

Click here to see answer by jim_thompson5910(35256)

Question 872610: divide 2700 into 3 parts such that 12 times the first is equal to 5 times the second and 6 times the third
Click here to see answer by lwsshak3(11628)

Question 872754: need help solving for the value of x in the following proportion
7/(x-5)=15/(x+4)

Click here to see answer by ewatrrr(24785)

Question 872032: I need to find the actual dimensions of a playroom that's next to a library across the hall three is the master bedroom with a bathroom connected to that and a closet.
The scale is 1 in. equals 16 ft.
Click here to see answer by ben720(159)

Question 865656: how to find 30% of 15.99.
Click here to see answer by Diana541(24)

Question 873175: 38. In preparing specimens for testing, it is often necessary to dilute the original solution. The dilution ratio is the ratio of the volume, in mL, of original solution to the total volume, in mL, of the diluted solution. How much water is required to make a 1:50 dilution from 12 mL of urine?
Click here to see answer by josmiceli(19441)

Question 874401: (1/2)/(2/3) = (3/4)/?
Click here to see answer by ewatrrr(24785)

Question 875161: Q # 15 page #44 in exercise 6 calculate the percentage of grade point average falling in the interval X+_2s

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Question 875235: How to write and solve this problem using a proportion.
There are 20 players on the soccer team. 4 of the players are in Jr. High. What percent of the team is not in Jr. High.
Click here to see answer by ewatrrr(24785)

Question 875510: what is 3/4 of 8 pencils?
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Question 876078: the scale on a map is 3 centimeters = 100 kilometers. how many kilometers apart are two towns that are 7.8 centimeters apart on the map?
Click here to see answer by ewatrrr(24785)

Question 876076: the scale on a map is 3 centimeters = 100 kilometers. how many kilometers apart are two towns that are 7-8 centimeters apart on the map?
Click here to see answer by ewatrrr(24785)

Question 876074: the scale on a map is 3 centimeters = 100 kilometers. how many kilometers apart are two towns that are 7-8 centimeters apart on the map?
Click here to see answer by ewatrrr(24785)

Question 876713: There were a total of 90 coaches and players at a sports meet. For every 2 coaches there were 13 players.
How many players went to the sports meet?
Click here to see answer by ewatrrr(24785)

Question 877932: Solve the proportion
2 over 10 equals 11 over x
Click here to see answer by josgarithmetic(39617)

Question 878757: Hi everyone I need help in this bukit panjang govt high school 2013 prelim Emaths qns :
12 men planned to complete building a shed in 15 days. Only 1/3 of the shed was built at the end of 6 days due to poor weather conditions. Assuming that all men worked at the same rate, how many more men were needed for the rest of the job to be completed as scheduled ?
Thank you and appreciate your help rendered 😊
Click here to see answer by ewatrrr(24785)

Question 878967: If the scale on a model is 1 inch: 10 feet and a house is 2.5 inches tall, how tall would the actual house be?
Click here to see answer by jim_thompson5910(35256)

Question 879003: two inches on a map equals 10 miles. Write the ratio of map inches to miles.
Click here to see answer by jim_thompson5910(35256)

Question 879518: I own alone 500,000 shares of stock in a company and I want to issue to an investor stock so that the investor will own 18% of the total outstanding. How do I compute the number of shares.
Thank you. Ron
Click here to see answer by ankor@dixie-net.com(22740)

Question 880830: 80% of 250 is what number?
Click here to see answer by Fombitz(32388)

Question 881687: a man reaches his office from his home 40 minutes too late.if he walks at 3 km an hour and 30 minutes too soon.if he walks 4 km an hour.how far is his office frm his home?
Click here to see answer by ankor@dixie-net.com(22740)

Question 881694: if a man walks at 4/5th of his usual rate he reaches office 5 minutes later than usual how many minutes does he usually take to reach his office
Click here to see answer by ankor@dixie-net.com(22740)

Question 881695: a man rows 1 km upstream in 20 min and 1 km downstream in 15 min. what is his speed of rowing in still water?
Click here to see answer by Alan3354(69443)

Question 883045: How do I make a. 05% solution from a liquid 10% solution?
Click here to see answer by Alan3354(69443)

Question 883672: On a map 5/8" = 10 miles, and my destination between two cities is 4 inches, how many miles is that?
Click here to see answer by Alan3354(69443)

Question 884113: on a map 1 inch represent 688 miles how much is 5/8inches represent. please show me how to do it step by
Click here to see answer by Alan3354(69443)

Question 884333: Which of the following proportions is TRUE???
a) 1:4 = 2:5
b) 6:9 = 10:12
c) 5:11 = 15:30
d) 2:7 = 4:14
Click here to see answer by Alan3354(69443)

Question 884382: In a class of 125 students 20% of the students can dance.2/5th of the total number of students in the class can sing and 2/5 of the remaining number of students in the class are good at sports.What is the respective ratio of the number of students who can dance to the number of students who are good at sports?
Click here to see answer by geetha_rama(94)

Question 884381: In a class of 125 students 20 of the students can dance.2/5th of the total number of students in the class can sing and 2/5 of the remaining number of students in the class are good at sports.What is the respective ratio of the number of students who can dance to the number of students who are good at sports?
Click here to see answer by josmiceli(19441)

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