A and B can do a piece of work in 20 days. If A alone can do the whole work in 36 days, in how many days will B finish the work alone
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Answer:
22.5 days
Step-by-step explanation:
a and b do in 20 days = 1 work
a and b Do in 1 day = 1/20 work
a do in 36 days = 1 work
a do in 1 day = 1/36 work
b do in 1 day = 1/20-1/36 = 18/360-10/360 = 8/360 = 2/45
B can Do 2/45 work in 1 day
b can do 1 work in 45/2 days
= 22.5 days
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