1.

'A' can do a piece of work in 2 hours, 'B' can do thrice the work in 8 hours and C can do the same work as 'A' in 8 hours. If all of them work together, how long it would take them to complete the work ?

A. 1 hour
B. 2 hour
C. 3 hour
D. 4 hours
Answer» B. 2 hour


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