A takes thrice as long to do a piece of work as B takes. A & B together can finish the work in 15 days. A alone can do it in—
A takes thrice as long to do a piece of work as B takes. A & B together can finish the work in 15 days. A alone can do it in—
From the Combined Bank Assistant Programmer (CSE) March 2021 – Preliminary exam, question 62 of 86.
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