Questions on Algebra: Proportions answered by real tutors!

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Question 751760: If I need 60 ounces of mix and 3/10 cup of water, how much mix would I need to use with one cup of water?
Click here to see answer by josgarithmetic(1520)

Question 751177: Solve 3/5+m/24 I missed alot of school & idk how to do these problems
Click here to see answer by Edwin McCravy(8909)

Question 751177: Solve 3/5+m/24 I missed alot of school & idk how to do these problems
Click here to see answer by timvanswearingen(106)

Question 751049: An island has 12 fur seal rookeries (breeding places). To estimate the fur seal pup population in Rookery A, 6861 fur seal pups were tagged in early August. In late August, a sample of 600 pups was observed, and 219 of these were found to have been previously tagged. Use a proportion to estimate the total number of fur seal pups in Rookery A.
The estimated total number of fur seal pups in Rookery A is ____. (Round to the nearest whole number.)
Additional instructions: Set up a proportion, and then use the cross products principle of proportions. If a/b=c/d, then ad=bc. Be sure to round to the nearest whole number.
Click here to see answer by josgarithmetic(1520)

Question 749784: The ratio of AB: BC is 3:2. If AC=15 cm, find the length of AB
Click here to see answer by stanbon(57347)

Question 749529:
Two trains were 332 miles apart and heading towards each other at 11 am. If the trains meet at 1 pm and one train was traveling 36 miles per hour faster than the other, then how fast was each train moving?
Click here to see answer by checkley79(3050)

Question 749531: Alex had a 4 mile head start on Mika. How long will it take Mika to catch Alex if Alex traveled at 6 miles per hour and Mika traveled at 8 miles per hour?
Click here to see answer by Alan3354(30993)

Question 749157: a map of the United States has a scale of 1 in.: 250 mi. The cities of Los Angeles, California, and Dallas, Texas are 5 3/4 inches apart on the map. Find the actual distance between these two cities.

Click here to see answer by JoeTaxpayer(121)

Question 748632: word problem: In order to pass a test with 80% with 70 questions. What is the highest number of questions I can answer incorrectly?
Click here to see answer by timvanswearingen(106)

Question 748634: word problem:
There are 240 children in 5th grade, 1/3 are girls, what is the number of boys at school?
Click here to see answer by tommyt3rd(562)

Question 747824: Hi, I can't understand the answer as explained in the link below.
http://www.algebra.com/algebra/homework/word/misc/Miscellaneous_Word_Problems.faq.question.477023.html

Can you kindly help me?
Thanks,
Moazzam
Click here to see answer by lynnlo(4164)

Question 747680: Two inches of heavy, wet snow are equivalent to 1 inch of rain. Estimate the water content in 3 inches of heavy, wet snow.
Click here to see answer by Cromlix(344)

Question 746486: isabel ran 9 miles with her friend kaylee last week. this was 60% of the distance she ran all week. how far did she run last week?
Click here to see answer by Cromlix(344)

Question 746235: please help me solve this question ; aliff bought some lollipops and gave half of them to bob. bob bought some chocolates and gave half of them to aliff. aliff ate 4 chocolates and bob ate 7 lollipops. after that the number of chocolates and lollipops, aliff had were in the the ratio 1:8.the number of chocolates and lollipops bob had were in the ratio 1:5. how many lollipops did aliff give to bob?
Click here to see answer by MathTherapy(1424)

Question 745736: what everyday object is 6 feet long?

Click here to see answer by stanbon(57347)

Question 745543: 1, 16, 4, 4 Write a proportion using the following numbers.
Click here to see answer by fcabanski(874)

Question 745379: how much water (0% strength) should be added to 8L of 6% saline solution to reduce the strength to 4%?
How do I solve problems like this one?
Click here to see answer by stanbon(57347)

Question 745067: Please help me solve this problem:
The smallest mammal, Kitti's hog-nosed bat has a head-body length of 1 7/50inches and a wingspan of about 5 1/10 inches. A scale drawing of this little bat is made showing it in full flight. The wingspan on the drawing is 15 inches. What should the length of the bat be in the drawing?
L= 1 7/50
15= 5 1/10
15 x 1.14 = 17.10 / 5.10 = 3.35 or 3 1/3
is this correct
Click here to see answer by stanbon(57347)

Question 745066: The sears Tower is 1450 feet tall. Jeff wanted to make a scale model for his class project, but his mother's car can hold only a 36 in tall model. What scale does Jeff need?
Click here to see answer by Alan3354(30993)

Question 744773: You have 100 random selected students . What is the probability half of the group has blue eyes ? What's the probability at least 25 percent of the group has blue eyes ?draw probability distribution for this exercise .
Click here to see answer by stanbon(57347)

Question 744378: how to i solve
5/8 x = -40
Click here to see answer by rfer(12660)

Question 744316: on a map, 1 inch equals 25 miles. If two cities are 7 inches apart on the map, how far are they actually apart?
Click here to see answer by Cromlix(344)

Question 744103: What Is n/5=27/45 what does n equal
Click here to see answer by rfer(12660)

Question 743536: w varies jointly as x and y and inversely as z. one set of values is w=112 x=4, y=8 and z= 0.2. Find w when x=8, y=10 and z=4
Click here to see answer by Edwin McCravy(8909)

Question 743133: Three numbers are in the ratio 2:3:4. What are the numbers if their sum is 72?

Click here to see answer by checkley79(3050)

Question 743081: sin:cos::1:3 find sin and cos
Click here to see answer by josgarithmetic(1520)

Question 742432: What is the missing number in the proportion 4 : n = 3 : 9
Click here to see answer by jim_thompson5910(28595)

Question 741331: Please help me solve this.
If the total cost of x apples is b cents, what is a general formula for the cost, in cents, of y apples?
Click here to see answer by MathLover1(6634)

Question 741331: Please help me solve this.
If the total cost of x apples is b cents, what is a general formula for the cost, in cents, of y apples?
Click here to see answer by richwmiller(9135)

Question 741256: I have made 60 cupcakes. 36 are chocolate and 24 are vanilla. How many more chocolate do I need to make to have 70% of the cupcakes be chocolate. Please show the proportion used.

Click here to see answer by stanbon(57347)

Question 740792: I am rated at work either 4, 2, or 3 in 4 categories. Each category holds a weigh:
One is 40%; two are 25%; and one is 10%
In the 40% category I was rated 3 out of 4
In both 25% categories I was rated 3 out of 4
In the 10% category I was rated 2 out of 4
What should my total rating be? Can you please show me the calculation?
Thanks!
Click here to see answer by lynnlo(4164)

Question 740500: Set up a proportion for the following situation.It takes Todd 8 minutes to eat 5 pies at a pie eating contest. How many pies can Todd eat in 15 minutes?
Click here to see answer by stanbon(57347)

Question 739971: I have tried to solve the following GMAT math problem for hours!
After spending 5/12 of his salary, a man has 140.00 dollars left. What is his salary?
The choices given were : 200.00. 240.00. 300.00. 420.00 583.00
The answer is. 240.00 I just do not understand how they got their answer.
The answer is based on the following: the man did not spend 7/12 of his salary. Ok, I got that understanding. However, they say that 140.00 represents 7/12 of his salary(I have no idea why they say this?) Set up a proportion where S is equal to his salary:
7/12 is equal to 140 divided by S. The answer is 240.00.
I tried to figure out the value of 1/12 . Forget that.
Then I set up the following proportion: If 5/12 is equal to 140, then 7/12 is equal to what value.
The answer I got was 336.00. That was not one of the choices.
I am completely stumped. Kindly help me with this supposedly easy proportion problem.
Sincerely, Ellen Motoi
Click here to see answer by josgarithmetic(1520)

Question 737320: A kilometer is about 5/8 mile. About how many miles are in 4 2/5? What is the proportion and what is the correct answer?
Click here to see answer by sachi(392)

Question 737098: How do I set these up?
It takes 13 people to pick 112 watermelons in a day. How many people would it take to pick 200 watermelons in a day?
Set up a proportion for the following situation.It takes Todd 8 minutes to eat 5 pies at a pie eating contest. How many pies can Todd eat in 15 minutes?

Click here to see answer by josgarithmetic(1520)

Question 736619: A simple random sample of 250 Americans revealed that 112 of them owned a DVD player.
DVD companies, as an industry, brag that half of all Americans own a DVD player
At the 10% level, the DVD industry's claim should be
Rejected or not Rejected ?
Click here to see answer by lynnlo(4164)

Question 736578: if the actual distance between two cities is 157.5 miles and the distance on the map is 1 and 3/4 inches, what is the scale of the map?
Click here to see answer by rfer(12660)

Question 736539: I am having difficulty with this problem:
A gift of $6000 grew into $6,000,000 in 200 years. What is the interest rate if it is compounded annually?
Click here to see answer by stanbon(57347)

Question 736387: Hi,
Here is the problem I need help with-
The diameter of a dinner plate is 1 ft. In a dollhouse set, the
diameter of a dinner plate is 1 and 1/4 in.What is the ratio of the diameter of the
dollhouse plate to the diameter of the full-size plate?
Please help me out
This is what I have so far-
1ft= 12 in
I think I have to write as followed
1.25/12 in
but I don't know what to do?
Help please
Thank you
Click here to see answer by Simnepi(204)

Question 736067: 190% of what number is 95?
Click here to see answer by solver91311(16885)

Question 735855: James Caleb and Abigail bought a pizza. James ate 1//6 of the pizza and Caleb ate 1/4 of the pizza.
What fraction of the pizza did james and Caleb eat together? I got 5/12
Abigail ate 2/5 of the pizza that was remaining. What fraction of the original whole pizza did Abigail eat?
Click here to see answer by stanbon(57347)

Question 735681: JOSE RUNS 20 FEET IN 3 SECONDS HOW LONG DOES IT TAKE HIM TO RUN 100 FEET
Click here to see answer by solver91311(16885)

Question 735665: 2/7Y+3/8 =1/7Y+5/3
Click here to see answer by checkley79(3050)

Question 735606: I have an unlimited number of bags containing marbles.
Each bag contains only two colors - black and one other color.
Some have 45% aquamarine marbles.
Some have 45% blue marbles
Some have 60% cyan marbles
If I take one bag of each color and mix all three bags together in a larger bag (in a ratio of 1:1:1) then the resultant bag would contain the following of each color represented as a percentage:
15% aquamarine marbles
15% blue marbles
20% cyan marbles
(based on the relationship that the final bag contains the 300 marbles so the percentages of each is calculated as total color marble/300).
If I enter a ratio of 2:1:2 then my final percentages are:-
18% aqua marbles
9% blue marbles
24% cyan marbles
What ratio of my original bags would I need to combine together to have a new bag containing a final percentage of the color marbles equaling:-
10% aquamarine marbles
5% blue marbles
20% cyan marbles
(I can use part of an original bag but must use the original percentage of black and color marbles e.g. I could use half of a blue bag which would yield 27.5 black marbles and 22.5 blue marbles)
Click here to see answer by lynnlo(4164)

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