EduGoog

Time & Work

X and Y together complete a work in 8 hours. If X alone can complete it in 12 hours than Y alone can complete it in

Option:
A. 24 hours
B. 16 hours
C. 12 hours
D. 8 hours
Answer: A . 24 hours

Justification:

(X + Y)'s I hr's work = 1/8
X's 1 hr's work = 1/12
So, Y's 1 hr's work
= 1/8 = 1/12
= (3 - 2)/24 = 1/24 

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