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- A and B can do a piece of work in 4 days, while C and D can do the same work in 12 days.
Question 1:
A and B can do a piece of work in 4 days, while C and D can do the same work in 12 days. In how many days will A, B, C and D do it together? A. 12 days
B. 4 days
C. 3 days
Feedback A, B, C and D will together take ¼ + 1/12 = 4/12 = 1/3 ? 3 days to complete the work.
D. 2 Days
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