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

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Question 327359: In a class of 75 students, 15 recieved a grade of an 'A'. What fraction of the class did not recieve an 'A'? (reduce to lowest terms)
Click here to see answer by mananth(12270)

Question 327422: I need some help in solving this problem step by step. I really don't understand it. The formula to be used is: P(t)= Poe-kt, k>o. The question states, "Archaeology soil from beneath the Kish Church in Azerbaijan was found to have lost 12% of its carbon-14. How old was the soil?" I would appreaciate it. Thanks you very much!
Click here to see answer by galactus(183)

Question 327677: If the average person drinks 8,(8oz) glasses of water per day, a person who drinks 12.8 oz of water after a morning exercise session has consumed what fraction of the daily average?
Click here to see answer by unlockmath(1599)

Question 327770: At a traffic light, one cycle through green-yellow-red lasts for 110 seconds. The green light is on eight times longer than the yellow light, and the red light is on thirteen times longer than the yellow light. For how long is each colored light on during one cycle?
Click here to see answer by checkley77(12569)

Question 327769: In 2006, two tickets to a Rolling Stones concert and two tickets to a Jimmy Buffet concert cost, on average, a total of $758. At those prices, four tickets to see the Stones and two tickets to see Jimmy Buffet cost $1,250. Find the average cost of a Rolling Stones and a Jimmy Buffet ticket in 2006.
Click here to see answer by checkley77(12569)

Question 327754: dale runs 4 miles in 30 minutes at the dame rate how many miles would he run in 24 minutes
Click here to see answer by checkley77(12569)

Question 327982: In a certain school there are twice as many girls as boys.50% of the boys and 20% of the girls do not have lunch in school. What percent of the school enrollment does have lunch in school?
A 30% B 40% C 50% D 60% E 70%

Click here to see answer by mananth(12270)

Question 328342: A local warehouse-type store advertises that all its everyday prices are 60% off retail. During a sale, they advertise that sale prices will be 70% off retail. What percent discount is the store offering off its everyday price?
a.40% b.35% c.30% d.25% e.10%

Click here to see answer by jessica43(140)

Question 328420: out of 561 children, 98 live in a single family home. what percentage is that? thank you
Click here to see answer by josmiceli(9680)

Question 328461: An individual buys shoes for $82.82 at a 15% off sale. What was the original price?
Click here to see answer by Fombitz(13828)

Question 328820: Tori invested $8000 in money market funds. Part was invested at 5% simple interest, and the rest was invested at 7% simple interest. At the end of 1 year, Tori had earned $496 in interest. How much did she invest in each fund?
Click here to see answer by checkley77(12569)

Question 329117: Pat invested a total of $3000. Part of the money yields 10% interest per year and the rest yields %8 interest per year. If the total yearly interest fromt his investment is $256 how much did Pat invest at 10% and how much did she invest at 8%???
Click here to see answer by stanbon(57347)

Question 329192: Can you please help me solve the following question? Thank you!
David eats 3 more cashews per minute than Casey does, and he can eat 80 of them in the same time it takes her to eat 56.. How fast do each of them eat cashews?
Click here to see answer by solver91311(16885)

Question 329207: A movie theater makes 30% of its revenue from concession sales. If concession sales were $174,000, what was the total revenue?
(F) $52,200
(G) $121,800
(H) $248,570
(J) $580,000
(K) $746,000
Click here to see answer by stanbon(57347)

Question 329202: I asked this question earlier, but cannot get into my account to see if it was answered. Please help
Bear Population: To esimate the size of the bear population on the Keweenaw Peninsula, conservationnists captured, tagged, and released 50 bears. One year later, a random sample of 100 bears included only 2 tagged bears. what is the conservationist's estimate of the size of the bear population?
Click here to see answer by stanbon(57347)

Question 329384: In a school choir, the ratio of boys to girls is 3 : 5. If there are a total of 24 singers in the choir, how many girls are in the choir?
(A) 6 (B) 9 (C) 14 (D) 15 (E) 40
Click here to see answer by Tutorteddy.Com(12)

Question 329487: a 1500 liter tank contains 30 liters of a 70 % acid solution. You add x liters of a 30 % acid solution to the tank. Determine a function that represents the proportion of acid to the total solution in the final mixture
Click here to see answer by ankor@dixie-net.com(15652)

Question 329590: what is 1% of 36
Click here to see answer by vleith(2825)

Question 329597: At a certain high school, the ratio of lefthanded to right-handed basketball players is 1 : 4. If there are a total of 20 players on the team, how many players are right-handed?
(A) 1
(B) 4
(C) 5
(D) 12
(E) 16
Click here to see answer by aseem(9)

Question 329670: A man went to the zoo and visited the monkey house, carrying a bag of nuts. He found that is he divided them equally among the seven monkeys in the first cage he would have one nut left over. If he divided them equally among the eleven monkeys in the second cage there would be eight left over. If he divided them equally among the thirteen monkeys in the last cage there would be three left over.
He also found out that if he divided them equally among the monkeys in all three cages, or among the monkeys in any two cages, there would always be some left over.
What is the smallest number of nuts the man could have had in his bag? In general, how many nuts must he have? Explain
Click here to see answer by galactus(183)

Question 330048: Maria took a group of clients out to dinner, and the bill was $227.68 including tax.If Maria left a 15%tip on the total bill, how much did the dinner cost in all?

Click here to see answer by nerdybill(6959)

Question 330241: The rhinelander daily news March 14 2007 issue, ran a story on rising gas prices. last week, gas was selling for $1.99 a gallon and the world looked rosy. Not so now. The price of a gallon of regular unleaded nosed up to $2.24. What was the percent increase? Round to the nearest hundredth percent.
Click here to see answer by Fombitz(13828)

Question 330257: Maria Fay bought 4 Aquatread tires at a local Goodyear store. The sales person told her that her mileage would increase by 6%. Before this purchase, Maria was getting 22 mpg. What should her mileage be with the new tires to nearest hundredth?
Click here to see answer by stanbon(57347)

Question 330343: The price of a notebook was $3.15 yesterday. Today, the price rose to $3.65 . Find the percentage increase. Round your answer to the nearest tenth of a percent.

Click here to see answer by rfer(12660)

Question 330473: scott, anne and jane form a parnership in which, scott invests $60,000. anne invests $40,000 and jane invests $70,000
a) scott and jane are each to receieve a salary of $20,000 out of the profit, while ther remaining profit is to be devided between the three in the ratio of their investments. find out how much each partner will receive in total if the profit is $125,000
b) anne suggests that she be paid a salary of $35000 and not share the profits. is anne better off with this suggestion? justify your answer with the calculations
Click here to see answer by mananth(12270)

Question 330591: a bookstore has a 40% markup. if the selling price of the book is $42, find the price that the book store pays for the book
Click here to see answer by checkley77(12569)

Question 331042: can you please help me with this question. After a 30% discount, an item sells for $10.50. What was the price before the discount?
Click here to see answer by rfer(12660)

Question 331347: A car radiator has a 6-liter capacity. If the liquid in the radiators 40% antifreeze, how much liquid must be replaced with pure anitfreeze to bring the mixture up to a 50% solutions? If I told you the answer is 1 liter, in your own words, using complete sentences explain how you would solve this problem

Click here to see answer by galactus(183)

Question 331458: On 51 of the last 75 business days, the stock market either went down or did not change. What percent of the time did the market go up?
I do not know where to even start... HELP PLEASE! :)
Click here to see answer by mathmandotcom(31)

Question 331587: determine the probality that at least 2 people in a room of 13 people has the same birthday
a)i need to compute the probility that 13 people have different birthdays
b)the complement of 13 people have different birthdays is at least 2 people share the same birth days out of the 13 people
Click here to see answer by solver91311(16885)

Question 331576: For extremely cold temperatures, an automobile facturer recommends that a 80% antifreeze and 20% water mix be used in the cooling system of a car. How many quarts of pure 100% antifreeze and 50% antifreeze and 50% water mix should be combined to make 11 quarts of 80% antifreeze and 20% water mix?
Click here to see answer by galactus(183)

Question 332028: find the original is a 15% discount and the sale price is $255.
Click here to see answer by jrfrunner(365)

Question 331957: In a class of 30 students there are 14 boys. what is the boy-girl ratio?

Click here to see answer by rfer(12660)

Question 332178: celeste wants to have her hair cut and permed and also go to lunch. she knows she will need 95.00 dollars, the perm cost twice as much as her haricut and she needs 5.00 dollars for lunch. How much does the perm cost?
Click here to see answer by texttutoring(324)

Question 332179: Gina brought a toaster oven for 75.00 dollars it was 1/4 off the list price. What was the list price?
Click here to see answer by mananth(12270)

Question 332177: The ratio of men to women in a certain factory is 3 to 4 there are 210 men how many workers are there?
Click here to see answer by mananth(12270)

Question 332189: If 525 mg of a radioactive element decays to 400 mg in 48 hours, what is its half-life?
Click here to see answer by ankor@dixie-net.com(15652)

Question 332617: A tour bus can safely hold 8 adults or 12 children in addition to the operator. how many children can fit safely in the boat with 6 adults?
Click here to see answer by solver91311(16885)

Question 332995: what is the ratio of 2 3/4 to 6 1/4
Click here to see answer by mananth(12270)

Question 332994: what is the ratio of 2 3/4 to 6 1/4
Click here to see answer by nyc_function(2733)

Question 333075: I feel like a complete idiot on this one. I believe it may be just as simple as it appears, but I'm afraid I'm missing something.... Anywhoo, here's the question:
Tuition at a certain college recently increased from $9000 to $10,000. Find the ratio of the increase in price to the original price in simplest form.
And this is my response (as close to 'showing my work' as possible):
9,000:10,000
9:10
Is it just that simple or is there a much larger expectation here?
Thank you so much for your help!
Click here to see answer by josmiceli(9680)

Question 333553: What is 1.35% of 50,000.00 what will I be left with.
Click here to see answer by mananth(12270)

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