Q. A can complete a work in 27 days and B in 54 days. Their combined efficiency is:

(A) 1/18
(B) 1/20
(C) 1/24
(D) 1/27

✅ Correct Answer: (A) 1/18

Explanation: Combined rate = 1/27 + 1/54 = 1/18.

Published by Deepak Sahoo ⭐ 11.23K Points at 21-Jul-2026 06:20 am in Math

Explanation by: Deepak Sahoo

Combined rate = 1/27 + 1/54 = 1/18.

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