A and B working together take 15 days to complete a piece of work If A alone can do this work in 20 days,how long would B take to complete the same work?
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Answer:
60 days
Work done in one day
A+B=1/15
B=1/20
Therefore, A= 1/15–1/20 ( work done in a day by A)
=(20–15)/300
=1/60
A requires 60 days to complete the task.
hope this helps ❤️
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