1.

A can finish a work in 18 days and B can do the work in 15 days. B worked for 10 days and left the job. In how many days, A alone can finish the remaining work

Answer»

6 days




B’s ONE DAY’s work = 1/15 

B’s 10 day’s work = 1/15 × 10 = 2/3 

Remaining work = 1/3 

A’s 1 day work = 1/18 

No. of days A take to finish 1/3 of the work = 1/3/1/18 = 1/3 × 18 = 6 days.



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