Category: Mathematics | Last updated: 2026-09-18

A can do a piece of work in 10 days. B can do it in 15 days. Working together they will finish in:

A) 5 days

B) 6 days

C) 7 days

D) 8 days

Explanation

Combined rate = 1/10 + 1/15 = 5/30 = 1/6. So 6 days.

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