1.

Arun and vinod can do a work in 7 days. if arun does twice as much work as vinod in a given time, how long will arun alone take to do the work?

Answer»

Let the the TIME TOOK by VINOD be y.
And the time by Arun be 2y.
According to QUESTION = y+2y=7
=3Y =7
=7/3



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