Q. A can complete a work in 60 days. B is three times as efficient as A. Together they will complete the work in:

  • (A) 12 days
  • (B) 15 days
  • (C) 18 days
  • (D) 20 days
✅ Correct Answer: (B) 15 days
Explanation: B takes 20 days. Combined rate = 1/60 + 1/20 = 1/15.

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

Explanation by: Deepak Sahoo
B takes 20 days. Combined rate = 1/60 + 1/20 = 1/15.

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