6. A and B together can do a piece of work in 15 days, while B alone can finish it 20 days. In
how many days can A alone finish the work?
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Answer:
60 days
Step-by-step explanation:
total work B can do in 1 day = 1/20
. A and B together can do a piece of work in = 15 days
work both will do in 1 day =1/15
A alone finish the work in = 1/15 -1/20
4-3/60 = 1/60
Make recipolcal to get number of days
60 days
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