Questions on Word Problems: Problems on percentages, ratios, and fractions answered by real tutors!

Tutors Answer Your Questions about Percentage-and-ratio-word-problems (FREE)

Question 202028: In the right triangle, the ratio of the measures of the two acute angles 4:1. What is the measure in degress, of the larger acute angle?
Click here to see answer by rfer(12677)

Question 202108: A school board plans to merge two schools into one school of 1000 students in which 42% of the students will be African Americans. One of the schools has a 10% African American student body and the other has a 90% African American student body. What is the student population in each of the two schools?
Click here to see answer by rfer(12677)

Question 202279: a map is printed on a scale of 1:100. the chart shows two towns 3 inches apart. what fractional part if a mile are the two towns actually apart?
Click here to see answer by solver91311(16897)

Question 202529: How many yards of material from a 24-yard length of cloth remain after 3 pieces, each 3 yards long, and 5 pieces, each 2 yards long, are removed?

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Question 202772: The ratio of the weight of copper to the weight of zinc in a U.S. penny is 1/39. If 50 kg of zinc is being turned into pennies, how much copper is needed?
Click here to see answer by rfer(12677)

Question 202777: The ratio of the weight of an object on Mars to the weight of that object on Earth is 0.4 to 1
a.) How much would a 12-ton rocket weigh on Mars?
b.) How much would a 120-lb astronaut weigh on Mars?
Click here to see answer by rfer(12677)

Question 202852: A survey of 900 Americans found that 680 had confidence in the economy. If 80% of the women and 70% of the men surveyed expressed confidence in the economy then how many men were surveyed?
Click here to see answer by Edwin McCravy(8918)

Question 203140: The difference between the numerator and the denominator of a certain proper fraction is 24. If ⅜ is added to the numerator and ¼ subtracted from the denominator, the value of resulting fraction is 3⁄14. Find the numerator
and denominator.
Click here to see answer by stanbon(57412)

Question 203555: A 2-cup mixture is 1/3 flour and 2/3 cornmeal. If 1 cup of flour is added to the 2-cup mixture, what fraction of the new 3-cup mixture is flour? Express your answer as a common fraction.
Click here to see answer by promotion analysis(5)

Question 203597: if an employer reduce the working week from 40 hours to 35 hours with no loss of weekly pay,calculate the percentage increase in the hourly rate of pay
Click here to see answer by ankor@dixie-net.com(15663)

Question 203894: A car cost $4485 after an 8% discount. What is the original price of the car?
My answer makes no sense to me.
part/whole=x/100=4485/x=8/100

8x=448500
x=$56,062.50
Please help
Click here to see answer by scott8148(6628)

Question 204013: 2. A salesperson has a base monthly salary of $2500, plus 3% commission on total sales. Last month her total salary was $3040. What was the amount of her total sales?
Click here to see answer by rfer(12677)

Question 204041: Researchers find that the 2004 population of California was 35,893,799, the 2004 population of Pennsylvania was 12,406,292, and the total US population was 293,655,404. What is the probability that a randomly selected US resident did not live in California? Round to the nearest thousandth of a percent.

Click here to see answer by stanbon(57412)

Question 204040: The last 50 violent crimes committed in Maryville were 9 homicides, 24 robberies, and 17 assaults. What is the empirical probability that the next violent crime committed in Maryville will be an assault?
Click here to see answer by stanbon(57412)

Question 204039: Last fall, a gardener planted 74 tulip bulbs. She found that only 62 of the bulbs bloomed in the spring.
a) Find the empirical probability that a tulip bulb of this type will bloom
b) How many of the bulbs should she plant next fall if she would like at least 95 to bloom?

Click here to see answer by stanbon(57412)

Question 204038: Explain what outcomes of an experiment are. What does it mean to have equally likely outcomes? Provide examples to illustrate.

Click here to see answer by stanbon(57412)

Question 204037: Explain in your own words, using the definition of probability why: a) the probability of an event that cannot occur is 0; b) the probability of an event that must occur is 1.

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Question 204063: How many different three-digit numbers can be formed from the digits 0 through 9 if the first digit must be odd and the last digit must be even?
Click here to see answer by josmiceli(9697)

Question 204064: A box of chocolates contains 20 identically shaped chocolates. Four of them are filled with jelly, seven are filled with caramel, and nine are filled with nuts. What is the probability that one chocolate chosen at random is filled with caramel or nuts?
Click here to see answer by Alan3354(30993)

Question 204140: 70% of a class scored at least 70 on a math test, of the remainig class 60% scored 60-69. What percent of the entire class scored less than 60%.
Click here to see answer by RAY100(1637)

Question 204272: A 5-inch breadstick is broken into 3 pieces. One piece is 2 1/2 inches long; the second is 1 3/4 inches long. how long is the third piece?
Click here to see answer by PRMath(123)

Question 204608: Explain what outcomes of an experiment are. What does it mean to have equally likely outcomes? Provide examples to illustrate.
I used an example of a horse giving birth to a boy or a girl which is a likely experience, but my teacher wants a different example and I can not think of anything else that the other students have not turned in... Please help...
Click here to see answer by jim_thompson5910(28598)

Question 204606: Explain in your own words, using the definition of probability why: a) the probability of an event that cannot occur is 0; b) the probability of an event that must occur is 1.
i posted this in class:P(event) = (# of ways to succeed)/(# of ways to succeed + # of ways to fail)
a)the probability of an event that cannot occur is 0
If it cannot occur the # of ways to succeed is zero
Then P(event) = 0/(# of ways to fail) = 0
b) the probability of an event that must occur is 1.
If it must occur the # of ways to fail is zero
Then P(event) = (# of ways to succeed)/(# of ways to succeed) = 1
but my teacher wants something more detail as an explanation.. Can you please help.. I do not know what she wants from me...
Click here to see answer by jim_thompson5910(28598)

Question 204680: Explain what outcomes of an experiment are. What does it mean to have equally likely outcomes? Provide examples to illustrate.
I need help bad.. Everything I wanted to use was dice, cards, and other stuff but I can't because a bunch of other students have already used them so I need something new but I can not think of anything. Please help me
Click here to see answer by stanbon(57412)

Question 204735: Please help! I'm not sure if you are suppose to divide by the 50 percent or what/
In 1993, 50% of the 96.4 million U.S. households has answering machines. How many households has answering machines?
Click here to see answer by Earlsdon(6287)

Question 204737: Please help!
Find all numbers such that the sum of the number and 10 is less than 3 times the number.
So do you sent the problem up like:
x + 10 = 3x??
Click here to see answer by Earlsdon(6287)

Question 204919: Paolo's monthly salary is 1 3/7 that of Francesca's. Francesca's monthly salary is 7/5 of Dante's. What fraction of Paulo's earnings is Dante's?
Click here to see answer by nerdybill(6963)

Question 205088: respected sir,
plz help me out for solving this % sum...
1]A retailer shop's gross profit on a camera was 10% of the cost of the camera.if the store increase the selling price of the camera from $440 to $ 460 & the cost of the camera remained the same,then the shop's gross profit on the camera after the price increase was what % of the cost of the camera ?
plz explain me how to solve this problem...
waiting for yur reply.
regards
Binita.
Click here to see answer by stanbon(57412)

Question 205197: respected sir,
could you plz help me to solvethis % problem..
1]A merchant sells an item at a 20% discount ,making a gross profit of 20% of the cost.what % of the cost would the gross profit on the item have been if it had been sold without the discount?
waiting for your reply.
thank u.
regards
Binita
Click here to see answer by edjones(7569)

Question 205202: The combined population of Marysville and Springfield was 25,000 in 2000. By 2005 the population of Marysville had increased by 10%, while Springfield had increased b 9%. If the total population increased by 2380 people, then what was the population of each city in 2000?
Click here to see answer by ankor@dixie-net.com(15663)

Question 205320: I have 600 meters of fabric, 3 products with 3 different yields, 1st product yields 1.5 per meter, 2nd product yields 2 per meter, 3rd yields 3 per meter need to produce 3 equal amounts of product. I want this in an excel spread sheet and cannot solve. This is a real life question no textbook
Click here to see answer by scott8148(6628)

Question 205365: The discount on a DVD player is $43.00, which is 11% of the original price. To the nearest cent, what was the original price?
Click here to see answer by Alan3354(30993)

Question 205521: At a college, 80% of the all students are from Illinois, and 20% of the Illinois students
are from Chicago. What percent of all the students are from Chicago?
Click here to see answer by stanbon(57412)

Question 205627: In a class, 2/5 of the boys wear glasses and 1/3 of the girls wear glasses. What fraction of the class wear glasses?
(A)3/68 (B)2/15 (C) 11/30 (D) 11/15 (E) Not enough informantion
Click here to see answer by checkley77(12569)

Question 205664: Pleaase Help!
Junior ate 5% of the sandwicher at the picnic. If he ate 2 1/2 sandwiches, how many sandwiches were there originally?
Thank You : )
Click here to see answer by rfer(12677)

Question 205663: Can You Please Help Me With This Word Problem:
Joe has 105 books left in his store. If he originally had 300 books, what percent of the original number of books remain?
Thank You : )
Click here to see answer by rfer(12677)

Question 205709: Hi, I need help on my summer assignment, i did all of them except two...which i don't know how to do. I'm so sorry, they have parts to them.
The first one is :
"A Glass mirror is selling mirrors with frames. The store charges 10 cents for each square inch of mirror and 25 cents for each linear inch of frame.
A. Show that a 20 inch by 30 inch mirror should cost 85 dollars
(I tried solving this by multiplying the money by the inches, and by finding the area and stuff but either it equals more or less.)
B. If there was a mirror that measures 40 inches on one side, what would the other measurement be if the price were still 85 dollars
C. Write an equation that determines the price (p) given length (l) and width (W)
D. Solve this equation for L"
If you could just do A and B that would be great because then i could figure out c and D since u will show me the work and how u did it so I know....Thank You soooo much~!

Click here to see answer by RAY100(1637)

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