Q. Three pipes A, B and C can fill a tank in 12, 15 and 20 hours respectively. How long will they take together?

  • (A) 4 hours
  • (B) 5 hours
  • (C) 6 hours
  • (D) 7 hours
✅ Correct Answer: (A) 4 hours
Explanation: 1/12 + 1/15 + 1/20 = 1/4.

Published by Kanak Sharma ⭐ 6.13K Points at 28-Dec-2025 09:32 am in Math

Explanation by: Kanak Sharma
1/12 + 1/15 + 1/20 = 1/4.

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