Questions on Word Problems: Rate of work, PAINTING, Pool Filling answered by real tutors!

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Question 441577: arnold has taken 4 tests. on the 1st test he scored 83%, on the 2nd he got 85%, and on the 3rd he got 100%. the 4th test is counted double any of the other tests. what score did he get on the 4th test if his final overall average was 90%
Click here to see answer by rwm(914)

Question 441586: painters A and B can paint a wall in 10 hours when working at the same time. Printer B works twice as fast as A.HOw long would it take each of them to paint if they worked alone?
Click here to see answer by rwm(914)

Question 441815: If I can paint a house in 4hrs and You can paint a house in 6hrs...... How long will it take us to paint the house together?
Please help ASAP
Click here to see answer by josmiceli(19441)

Question 441844: a roofer spends 12 hours to shingle a roof alone. The roofer quits after 3 hours and the helper spends another 12 hours to finish. how long would it take the helper alone to do the whole job?
Work Attempted:
12/3=(12+x)/15
I have tried a few different ways and keep coming back to an answer of 60 hours; I am not comfortable with this answer.
Click here to see answer by nerdybill(7384)

Question 442144: If John can to a job in 2 hours and Sue can do the same job in 3 hours, how long would it take them to do the job together?
I really only need the formula to do this question, if you could give me the answer that would be great as well.
Click here to see answer by rwm(914)

Question 442546: Jack usually mows his yard in 7 hours. Jane can mow the same yard in 3 hours. How much time will it take to mow it together?
Click here to see answer by stanbon(75887)

Question 443394: Jake can wallpaper a room in 10 h and Maura can do it in 8 hours. What part of the job can they do by working together for 2.5 hours? For h hours?
Click here to see answer by swincher4391(1107)

Question 443565: Six workers can paint 4 houses in 8 days. How many additional workers are needed if the job of painting 8 houses must be finish in 4 days?
Click here to see answer by edjones(8007)

Question 444068: if it takes my sister 2 hours to clean her room. and it takes me 1 hour and 30 minutes to clean mine. How long would it take if we worked together?
Click here to see answer by jorel1380(3719)

Question 444981: A man is allowed 25 shots at a target. For every bull's-eye he receives $5.00, but for every miss he pays $2.50. How many bull's-eyes did he achieve if he made a profit of $5.00?
Click here to see answer by checkley79(3341)

Question 445050: Natasha can pick eight tree section of orange trees in four hours. It takes her brother five hours to pick the same section.
how long does it take them working together?
Suppose Natasha worked for two hours and then they worked together. What is the total amount of time that natasha would need to work to finish the job?
Click here to see answer by rwm(914)

Question 445103: I have been having problems with the following question:
Stan can load his truck in 24 minutes. If his brother helps him, it takes them 15 minutes to load it. How long does it take Stan's brother alone?
I have tried to make a chart (using work rate*time=work done) but all I could figure out was that Stan's work rate was 1/24. Please help.

Click here to see answer by checkley79(3341)

Question 445162: Painter Painter has three employees: Huey, Dewey, and Louie. Working together they can paint a large room in 4 hours. Huey and Louie can paint the same size room in 6 hours. Dewey and Louie can paint the same size room in 7 hours. How long would it take each of them to paint the room alone?
Click here to see answer by swincher4391(1107)

Question 445549: Jake can complete a job in 5 hours while Jerry can complete the same job in 3 hours.
a) How long would it take to complete the job if both Jerry and Jake worked
together?
b) How long would it take to complete the job if Jake starts the job two hours before
Jerry joins him?
I don't know how to set either question up
Click here to see answer by stanbon(75887)

Question 445677: six more than three times a number is twenty four
Click here to see answer by rfer(16322)

Question 445897: 1)An Experienced bricklayer can construct a small wall in 5 hours. The apprentice can complete the job in 10 hours. Calculate how long it takes to construct 3 walls if they work together.
Click here to see answer by josmiceli(19441)

Question 445982: If Sam can do a job in 4 days that Lisa can do in 6 days and Tom can do in 2 days, how long would the job take if Sam, Lisa, and Tom worked together to complete it?

Click here to see answer by Edwin McCravy(20054)

Question 446012: A carpenter is covering a floor that measures 10 feet by 12 feet.
The flooring boards are 3 inches wide and 8 feet long. How
many boards will the carpenter need to cover the floor?
Click here to see answer by jorel1380(3719)

Question 445981: A sewage treatment plant has two inlet pipes to its settling pond. One pipe can fill the pond in 10 hours, the other pipe in 12 hours. If the first pipe is open for 5 hours and then the second pipe is opened, how long will it take for both pipes working together to fill the pond?
Click here to see answer by jorel1380(3719)

Question 446137: what is the unit price ?
which is the better buy 5lbs of sugar for $4.75 or 20lb bag of sugar for $19.92
Click here to see answer by rfer(16322)

Question 446358: One person can do a certain job in six days, a second person can do the same job in two days, and a third person can do this job in three days. How many days will they take to do the job together?
Click here to see answer by mananth(16946)

Question 446518: If Hose A can fill up a tank in 20 minutes and Hose B can fill up the tank in 15 minutes , how long will it take for the hose together to fill up the tank ?
Click here to see answer by nerdybill(7384)

Question 446552: One machine works 8 hours faster then a second machine. If the two machines take twelve hours to finish the job working together, how long will it take them individually.
I just need to figure out how to get to aquadratic equasion.
Click here to see answer by nerdybill(7384)

Question 446749: Marian can weed a garden in 3 hours. robin can weed a garden in 4 hours. how long will it take them to weed a garden if they work together
Click here to see answer by josmiceli(19441)

Question 446849: one printing press can print the first edition of a book in 55 min, whereas a second printing press requires 66 min to print the same number or copies. how long would it take to print the first edition with both presses operating
Click here to see answer by mananth(16946)

Question 446848: a new machine can make 10,000 aluminum cans three times faster than an older machine. with both machines working, 10,000 cans be made in 9h. how long would it take the new machine, working alone, to make the 10,000 cans?
Click here to see answer by mananth(16946)

Question 446852: a mason can construct a retaining wall in 10 h. with the mason's apprentice assisting, the task takes 6 h. how long would it take the apprentice, working alone, to construct the wall?
Click here to see answer by robertb(5830)

Question 446856: two welders who work at the same rate are welding the girders of a building. after they work together for 10 h, one of the welders quits. the second welder requires 20 more hours to complete the welds. find the time it would have taken one of the welders, working alone, to complete the welds.
Click here to see answer by robertb(5830)

Question 446855: one technician can wire a security alarm in 4 h, whereas it takes 6 hr for a second technician to do the same job. after working alone for 2 h, the first technician quit. how long will it take the second technician to complete the wiring?
Click here to see answer by robertb(5830)

Question 446846: It takes Sam h hours to rake the yard, and it takes Emma k hours to rake the yard, where h>k. let t be the amount of time it takes Sam and Emma to rake the yard working together. is t less than k, between k and h, or greater than k?
Click here to see answer by Edwin McCravy(20054)

Question 446847: one person with a skiploader requires 12 h to remove a large quantity of earth. a second, larger skiploader can remove the same amount of earth in 4 h. how long would it take to remove the earth with both skiploaders working together?
Click here to see answer by htmentor(1343)

Question 446935: two machines that fill cereal boxes work at the same rate. after they work together for 7 h, one machine breaks down. the second machine requires 14 h more to finish filling the boxes. how long would it have taken one of the machines, working alone, to fill the boxes?
Click here to see answer by nerdybill(7384)

Question 446975: Shawna can pour a large concrete driveway
in six hours. Dan can pour the same
driveway in seven hours. Find how long it
would take them if they worked together.
Click here to see answer by rwm(914)

Question 445332: Sam can paint the fence in 9 hours and Bob can paint it in 6 hours. How long will it take if Sam and Bob paint the fence together?
I tried 1/9 + 1/6 = 1/15 so I got the answer of "3 hours" but it was marked wrong.
Click here to see answer by rwm(914)

Question 446940: Zack and Mindy picked a row of peas together in m minutes. it would have taken Zack n minutes to pick the row of peas by himself. what fraction of the row of peas did Zack pick? what fraction of the row of peas did Mindy pick?
Click here to see answer by rwm(914)

Question 447324: An experienced worker can paint a room three times faster than her apprentice can. Working together, they can do the job in 6 hours. How long would it take the experienced worker to finish the job if she worked alone?
Click here to see answer by jorel1380(3719)

Question 447510: A mason can lay the bricks in a sidewalk in 14 hours. The mason's apprentice requires 22 hours to do the same job. After working together for 3 hours, the mason leaves for another job and the apprentice continues working. How long will it take the apprentice to complete the job?

Click here to see answer by jorel1380(3719)

Question 447619: "If it took 5 people 45 minutes to count all the ballot papers how long would it have taken 3 people?"
I think it is as follows???.....
5 people took 45 mins therefore each person did the equivalent of 9 mins worth of work....with 2 less people (18 mins worth) you need to add the 18 mins to the 45 mins that the 5 people managed to do the job in ...the answer being 63mins?
Click here to see answer by Edwin McCravy(20054)

Question 447705: denise can clean his house in 4 hours. his sister can clean the house in 3 hours. working together how long will it take them to clean the house?
Click here to see answer by solver91311(24713)

Question 447935: tom types 135 words in 3min. at that rate how many words in 10 min?
Click here to see answer by Edwin McCravy(20054)

Question 447908: this morning it took armenta 45min, to drive to work.During the first half hour he traveled 25miles.He drove at an average speed of 65miles per hour the rest of the work to work.How many miles in all did Armenta drive?
Click here to see answer by ankor@dixie-net.com(22740)

Question 448312: Any help would surely be appreciated. "If Cody and Hunter painted the room together, it would take them 4 hours and 57 minutes. Cody would be able to paint a room 3 hours and 3 minutes faster if Hunter helped. Figure out how long each person needs to paint a room alone". Thanks.
Click here to see answer by ankor@dixie-net.com(22740)

Question 448587: I've been trying to do this problem for days please help me!!! "Dan and Chris can fix the fence together in 4 hours and 25 minutes. Chris and Steph can fix the fence together in 2 hours and 55 minutes. How long each person can fix the fence alone?
Click here to see answer by sudhanshu_kmr(1152)

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