a and b together can write a manuscript in 20 days.fi a takes 25 when working alone, find time taken by b working alone
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b alone can take 100 days to complete work
Step-by-step explanation:
a and b together can write a manuscript in 20 days
a and b one day work = 1/20
1/a +1/b = 1/20
work done by a alone in 25 days
work done by a in 1 day = 1/25
1/25 + 1/b = 1/20
1/b=(1/20)-(1/25)
1/b=(5-4)/100
1/b=1/100
work done by b alone in 100 days
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