A) 3 days
C) 8 days
D) 9 days
From the given data,
12 children 16 days work,
One child’s one day work = 1/192.
8 adults 12 days work,
One adult’s one day’s work = 1/96.
Work done in 3 days = ((1/96) x 16 x 3) = 1/2
Remaining work = 1 – 1/2 = 1/2
(6 adults+ 4 children)’s 1 day’s work = 6/96 + 4/192 = 1/12
1/12 work is done by them in 1 day.
1/2 work is done by them in 12 x (1/2) = 6 days.
Related MCQs:
- X and Y can do a piece of work in 20 days and 12 days respectively. X started the work alone, and then after 4 days, Y joined him until the completion of the work. How long did the work last?
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- If A and B together can complete a piece of work in 15 days and B alone in 20 days, in how many days can A alone complete the work?