SOLUTION: a and b can each do a piece of work in 15 days and 18 days. if a works for 10 days, how long will b alone take to complete the job ??
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Question 907878: a and b can each do a piece of work in 15 days and 18 days. if a works for 10 days, how long will b alone take to complete the job ?? Answer by stanbon(75887) (Show Source):
You can put this solution on YOUR website! a and b can each do a piece of work in 15 days and 18 days. if a works for 10 days, how long will b alone take to complete the job ??
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a's rate = 1/15 job/day
In 10 days "a" completes 10(1/15) = 2/3 of the job.
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b's rate = 1/18 job/day
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Equation:
In "x" days "b" must complete 1/3 of the job
x(1/8) = 1/3
x = (1/3)/(1/18)
x = 6 days
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Cheers,
Stan H.
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