Questions on Algebra: Proportions answered by real tutors!

Tutors Answer Your Questions about Proportions (FREE)

Question 1021: 20% of what number is 8? How do you figure this? or how would you get the answer?
Click here to see answer by JimMarshall(82)

Question 2663: I need help on a proportional problem that I seen on the internet and I need it to be explained to me in lamen terms EXAMPLE:12/24=X/100 how do you determine the answer for the variable "x"?
Click here to see answer by JimMarshall(82)

Question 4629: Solve the proportion please:
5/6 = a-2/4
Click here to see answer by JimMarshall(82)

Question 6353: I'm having trouble solving the equation: (x -7):(x+7) = 2:9.

Click here to see answer by JimMarshall(82)

Question 26239: Tom has 100 baseball cards and 120 football cards. What is hte ratio of baseball cards to football cards?
Click here to see answer by JimMarshall(82)

Question 25565: Write a proportion for each phrase. Then solve, When nescessary, round to the nearest hundredth.
Question:
420 ft2 painted in 36 min; f ft2 painted in 30 min
Click here to see answer by JimMarshall(82)

Question 968028: a train 150 m long
is running at 72 km / hrs. It cross the bridge in 13 sec.find the length of the bridge
Click here to see answer by KMST(5328)

Question 968075: a company has some labours to complete work in 200 days if there are 8 more labours there will be 50 days less so how much labours are?
Click here to see answer by josgarithmetic(39616)

Question 968479: Find a mathematical model representing the statement. (Determine the constant of proportionality.)
y is inversely proportional to x. (y = 4 when x = 2.)
Click here to see answer by rothauserc(4718)

Question 968482: Find a mathematical model representing the statement. (Determine the constant of proportionality.)
P varies directly as x and inversely as the square of y.
P = 28/3 when x = 84 and y = 15.
P=??

Click here to see answer by Fombitz(32388)

Question 969851: What is the perimeter and area if the drawing is 25

Click here to see answer by erica65404(394)

Question 970041: A 8-oz iced at a certain restaurant has 48 calories how many calories are there in a 32oz iced tea
Click here to see answer by macston(5194)

Question 795: I need help on a proprtion,
2u-3/4u=u-1/u I did cross product method on this one and i got
2u(squared)-3u= 4u (squared)-4u then i isolated the u and the u (squared) and came out with u=2u(squared). I think i did this all right, but i'm not sure what the u would be. I missed this lesson in math becuase i'm on homebound school because of an illness i have. If you can please help me out i would appreciate it. Thank You.
Click here to see answer by JimMarshall(82)

Question 9232: complete this proportion:6/8=15/w(the possibilitesare.........20, 60, 120, or none of these)
Click here to see answer by JimMarshall(82)

Question 9232: complete this proportion:6/8=15/w(the possibilitesare.........20, 60, 120, or none of these)
Click here to see answer by Alan3354(69443)

Question 971747: Five men can mow a square field who's side is 60 ft in 4 hours. At the same rate of work, compute how many hours 10 men could plow a square field who's side is 180 in feet?
Click here to see answer by josgarithmetic(39616)

Question 971794: A is proportional to t^2
A is proportional to r^3
t=47 when r=0.25
find r when t=345
and pls tell the relationship between t and r
Click here to see answer by anand429(138)

Question 972426: the side of a polygon are 6, 10, 20, and 24 inches long. if the shortest side is reduced by 2 inches, what reductions should be made in the other side to obtain a similar polygon?
Click here to see answer by jim_thompson5910(35256)

Question 972727: Can 2 over 9 and 9 over 2 form a proportion?
Click here to see answer by stanbon(75887)

Question 973230: Find three numbers in continued proportion such that their sum is 14 and sum
of their squares is 84.
Click here to see answer by Edwin McCravy(20054)

Question 973982: On a map 1 inch represents 100 miles in actual distance. If the distance on the map between two cities is 10 centimeters, how for are they apart in miles?

Click here to see answer by anand429(138)

Question 974237: my house and the school are 16 miles apart. The scale on a map is 1.5 in =4 miles how far apart should the two cities be
Click here to see answer by stanbon(75887)

Question 974465: A certain type of lily spreads to double the area it covers every year. Ten years after being planted in our lake these water lilies cover a quarter of its surface. How many more years will it be before they cover the entire surface of the lake? Please help adapt ;)
Click here to see answer by josgarithmetic(39616)

Question 974895: p is directly proportional to q^3 .
if q is increased by 20%, find the percentage increase in p.
Click here to see answer by Alan3354(69443)

Question 975417: Working class- Mean: 12.80 Standard Dev: 2.85 N: 697
Upper class- Mean: 15.45 Standard Dev: 2.98 N: 38
1) Assuming that years of education is normally distributed to the population, what proportion of working class respondents have 12 to 16 years of education?
2) What proportion of upper-class respondents have 12 to 16 years of education?
Click here to see answer by Boreal(15235)

Question 975748: The ratio of the corresponding sides of two similar polygons is 2 : 3. If the perimeter of the larger polygon is 27, find the perimeter of the smaller polygon.
Click here to see answer by Algerba_101(1)

Question 975852:
Click here to see answer by Alan3354(69443)

Question 976216: A rectangular Persian carpet has a perimeter of 196 in. The length of the carpet is 18in more than the width. What are the dimensions of the carpet?
Click here to see answer by JulietG(1812)

Question 977017: A criminal claims to be carrying $5 million in twenty-dollar bills in a brief case. Is this possible? Why or Why not?
Click here to see answer by Fombitz(32388)

Question 978361: Hello
The information resources institute reports that one out of five people who buys ice cream buys vanilla ice cream. If a store sells 75 ice cream cones in one day, about how many will be vanilla? If you can please give a lot of details.

Thanks in advance.
Click here to see answer by solver91311(24713)

Question 979819: P is to q as s is to t
or p/q=s/t
Click here to see answer by Alan3354(69443)

Question 979978: Two numbers are in the ratio 3:5 and their sum is 112. Find the bigger number
Click here to see answer by ikleyn(52776)

Question 980096: In two different types of washing powder the ratio of measurement of soda and soap powder are 2:3 and 4:5. Let's workout the part of the soap powder in the new washing powder which is prepared by mixing 10kg of the first soap powder with 18 kg of second soap powder.
Click here to see answer by josgarithmetic(39616)

Question 980128: The ratio of the volume of three bottles is 5:3:2. These three bottles are filled with water and phenyl. The ratio of measurement of phenyl and water in three bottles each are 2:3, 1:2 and 1:3 respectively. 1/3 part of first bottle, 1/2 part of second bottle and 2/3 part of the third bottle are mixed together. Let work out the ratio of phenyl and water in new solution.
Click here to see answer by onlinepsa(22)

Question 980127: There are three types of liquids in a beverage of 700 litres. The ratio of measurement of the first and second liquid is 2:3 and the ratio of measurement of second and third is 4:5. Let's workout the ratio in which the first and the second liquid will be mixed so that the ratio of measurement of the three liquids become 6:5:3 in the same beverage.
Click here to see answer by josmiceli(19441)

Question 980659: y is directly proportional to R^2
When R=4, y=24
Work out the value of R when y=1350
My wrong working out: y ∝ r^2
24 ∝ 4^2
1350\4^2 = 84.375
1350 ∝ √84.357
1350 ∝ 9.185586535
1350 ∝ 9
Click here to see answer by josgarithmetic(39616)

Question 981149: x-2y=2 and x^2+5x+3y=3
Click here to see answer by josgarithmetic(39616)

Question 981656: Which of the following proportions is true?
a. 1:4=2:5
b. 6:9=10:12
c. 5:11=15:60
d. 2:7=4:14
Click here to see answer by rfer(16322)

Question 981655: Which of the following is true?
a. 1:4=2:5
b. 6:9=10:12
c. 5:11=15:60
d. 2:7=4:14
Click here to see answer by JulietG(1812)

Question 981760: Which of the following is not one of the three ways to express a ratio
A 3/4
B 3:4
C 3 of 4
D 3 to 4
Click here to see answer by josgarithmetic(39616)

Question 982578: If 80% of students passed their math test, what is the ratio of the students failed to the students passed?
a. 1/5
b. 2/5
c. 1/4
d. 4/1
Click here to see answer by macston(5194)

Question 982576: If 2/3 of the teachers in a school own a house, what is the ratio of non-homeowners to homeowners?
a. 2:5
b. 1:2
c. 3:5
d. 3:2

Click here to see answer by jim_thompson5910(35256)

Question 982574: Bag C and Bag D each contain 70 marbles. All the marbles inside both bags are red, white or blue.

In bag C, R:W = 2:3 and W:B = 3:5
In bag D, R:W = 2:3 and W:B = 4:5

What is the total number of white marbles in BOTH bags?
a. 13
b. 21
c. 24
d. 45
Click here to see answer by jim_thompson5910(35256)

Question 982577: If x:y = 3:5 and x:z = 5:7, what is the value of y:z ?
a. 3:7
b. 21:25
c. 7:3
d. 25:21
Click here to see answer by Edwin McCravy(20054)

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