Q. 84.1( 67 Votes )

A and B can finis

Answer :

Number of days A required do a piece of work : 16


Number of days B required do a piece of work : 12


Work done by A in one day:


Work done by B in one day:


A works alone for 2 days, so work completed by A in 2 days : =


Work left =


Work done by A and B together in one day: =


They can do the work together in days .


But th of the work is done by both A and B


Time required to complete th of the work together by A and B : 6 days


Time taken to finish the work 6 + 2 = 8days ( here 2 is added because work is done by A alone).


Total time taken to finish the work: 8days


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