# A can do a piece of work in 25 days and B can do it in 20 days.They work at it together for 5 days and then A goes away.In how many days will B finish the remaining work?

2
by Samarth16

2016-01-23T15:56:16+05:30

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• Time taken by A to finish the work alone = 25 days
• Time taken by B to finish the work alone = 20 days
• Work done by A alone in 1 day = 1 / 25 th part of work
• Work done by B alone in 1 day = 1 / 20 th part of work
• Work done by (A + B) in one day = 1/25 + 1/20 = 9/100 th part
• Work done by (A + B) in 5 days = 9/100 * 5 = 9/20
• Work remaining = 1 - 9/20 = 11/20
• Time taken by B alone to finish the remaining work = 11/20 * 1/20.
ya my also mistake
thnx samira for telling it correct
my pleasure
In which std. you all are in?
Class 8