I am studying for GMAT and I have come upon a problem I simple can't understand. Please, help:
If Carol can finish a job in 5 hours and Steve can finish the same job in 10 hours, how many minutes will it take both of them together to finish the job?
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Work Problems - Multiple People
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dagestan1980
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beatthegmat
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Hi dagestan:
There's a good technique for these kinds of problems. Please check out page 50 of my GMAT Flashcards: https://www.beatthegmat.com/viewtopic.php?t=32
Best of luck!
There's a good technique for these kinds of problems. Please check out page 50 of my GMAT Flashcards: https://www.beatthegmat.com/viewtopic.php?t=32
Best of luck!
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maxim730
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The formula is simply: 1/a + 1/b = 1/r
a = time of person A
b = time of person B
r = combined time
1/a = rate of person a; 1/b = rate of person b
1 is the "work" that they are doing, it could be building 25 boxes or painting a wall, or building 200 cars.
a = time of person A
b = time of person B
r = combined time
1/a = rate of person a; 1/b = rate of person b
1 is the "work" that they are doing, it could be building 25 boxes or painting a wall, or building 200 cars.
