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Tutors Answer Your Questions about Rate-of-work-word-problems (FREE)
Question 571268: Mary can finish an embroidery work in 10 days. After working for 3 days, Mary's cousin joined and together they finished the embroidery in another 4 1/2 days. How many days can Mary's cousin finish the work alone?
Click here to see answer by scott8148(5879)  |
Question 571158: Susan delivers 108 newspapers in 90 minutes. Stan delivers the same number of newspaper 120 minutes. which of the following formula would allow you to determine the time required to deliver the newspapers by both Susan and Stan working together
Click here to see answer by lwsshak3(2915) |
Question 571033: A square vegetable garden is to be tilled and then enclosed with a fence. If the fence costs $2.50 per foot and the cost of preparing the soil is $0.60 per ft2, determine the size of the garden that can be enclosed for $257.60.
Click here to see answer by josmiceli(6778)  |
Question 570872: Two cylindrical cans have the same volume. The height of one can is triple the height of the other. If the radius of the narrower can is 12 units, how many units are in the length of the radius of the wider can. I drew a picture to represent the 2 cans. I know that volume of can a=volume of can b. I know the height of can a=3b. I know the radius of can a is 12 units. I know the volume of a cylinder is pi (r)squared (h). I don't know what to do next.
Click here to see answer by scott8148(5879)  |
Question 570223: A pool owner is trying to fill his pool. The pump takes 6 hrs. A garden hose takes 10 hours. He wants to fill it up in a hurry. So he turns on the pump AND puts in the garden hose. Unfortunately, he leaves the drain open (which will drain the pool in 8 hours). How long will it take to fill the pool?
Click here to see answer by nerdybill(5404)  |
Question 569785: A water tank can be filled by any combination of 3 different taps . With the smallest tap the tank can be filled in 20 mins. With the middle tap the tank can be filled in 12 mins. With the largest tap the tank can be filled in 5 minutes .How long does it take to fill the tank with all 3 taps running ?
Explain your reasoning.
Click here to see answer by AnlytcPhil(1116)  |
Question 567310: A can finish the work in 6 days less than the time taken by B to finish the work.If both of them together can finish it in 4 days, then find the time taken by B alone to finish the workA can finish the work in 6 days less than the time taken by B to finish the work.If both of them together can finish it in 4 days, then find the time taken by B alone to finish the work
Click here to see answer by ankor@dixie-net.com(12684)  |
Question 565478: Left on together, the cold and hot water faucets of a certain buthtub take 7 minutes to fill the tub. If it takes the cold water faucet 17 minutes to fill the tub by itself, how long will it take the hot water faucet to fill the tub on its own? Do not do any rounding.
Click here to see answer by ankor@dixie-net.com(12684)  |
Question 565507: An automatic pitching machine can pitch all its balls in 1 1/4 hours. One attendant working working 3 1/2 hours can retrieve all the balls pitched by one machine. How many attendants working at the same rate should be hired so that the balls from 10 machines are all retrieved in 8 hours.
Click here to see answer by ankor@dixie-net.com(12684)  |
Question 565498: a water-tank can be filled by any combination of three different taps. with the smallest tap the tank can be filled in 20 minutes.with the middle tap the tank can be filled in 12 minutes.with the largest tap the tank can be filled in 5 minutes.how long does it take with all three taps running?
Click here to see answer by scott8148(5879)  |
Question 564995: Twin brothers, Billy and Bobby, can mow their grandparents lawn together in 89 minutes. Billy could mow the lawn in 30 minutes less time than it would take Bobby. How long would it take Bobby to mow by himself?
Click here to see answer by ad_alta(170)  |
Question 564582: I need to find out the formula to find out how many minutes it would take to mow an area of grass at the rate of 3 square feet per second? Thanks I have to have it in tonight to put in as computer code. Thanks again.
Click here to see answer by Alan3354(21555)  |
Question 564144: A pond is being drained by a pump. After 3 hours, the pond is half empty. A second pump is put into operation, and together the two pumps finish emptying the pond in half an hour. How long would it take the second pump to drain the pond if it had to do the same job alone.
Click here to see answer by josmiceli(6778)  |
Question 564144: A pond is being drained by a pump. After 3 hours, the pond is half empty. A second pump is put into operation, and together the two pumps finish emptying the pond in half an hour. How long would it take the second pump to drain the pond if it had to do the same job alone.
Click here to see answer by mananth(10541)  |
Question 561355: A contractor estimated that one of his two bricklayers would take 9 hours to build a certain wall and the other 10 hours. However, he knew from experience that when they worked together, 10 fewer bricks got laid per hour. Since he was in a hurry, he put both men on the job and found it took exactly 5 hours to build the wall. How many bricks did it contain?
Click here to see answer by ankor@dixie-net.com(12684)  |
Question 560647: It takes Jake, 14h to repair a car’s transmission. After he had worked for 7 h, Alice began to help him. Together, they finished the job in 3 more hours. How long would it take Alice to do the job alone?
I attempted to do this problem like I did the other one's by assigning a variable to the unknown amout of time worked by Alice. Then I got stuck when I tried to find the rate for both. And I think I'm supposed to subtract somewhere. Any help would be appreciated.
Click here to see answer by itsmers123nj(1) |
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