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- A and B can do a piece of work in 4 days. If A can do it alone in 12 days, B will finish the work in
Question 1:
A and B can do a piece of work in 4 days. If A can do it alone in 12 days, B will finish the work in A. 4 Days
B. 6 Days
Feedback If A and B together can do a piece of work in x days and A alone can do the same work in y
days, then B alone can do the same work in x y/ y – x days.
Therefore, the number of days B will take to finish the work = 4 × 12/ 12 – 4
= 48/8 = 6 days.
days, then B alone can do the same work in x y/ y – x days.
Therefore, the number of days B will take to finish the work = 4 × 12/ 12 – 4
= 48/8 = 6 days.
C. 5 Days
D. 10 Days
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