Multiple Choice Questions

A and B together can complete a work in 30days and B alone can do it in 60days Find in how many days...........

Quantitative Aptitude(IBPS RRB CL) Time and work

A and B together can complete a work in 30days and B alone can do it in 60days. Find in how many days A alone can do the work?

120

Solution:
A+B…30……2
B……60……1……………(LCM=60)
A ……………1
A = 60/1 = 60

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