A and B together can finish a piece of work in 12 days.If ‘A’ alone can finish the same work in 20 days,In how many ‘B’alone can finish it ?
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Step-by-step explanation:
a+b one day work = 1/12
a alone one day work = 1/20
b one day work = 1/12-1/20
= 5-3/60
=2/60 =1/30
B one day work = 1/30 it finishes in 30 days
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