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

A cistern can be filled by pipe A in 3 hours and by pipe B in 4 hours. Both together fill it in:

A) 7/12 hours

B) 12/7 hours

C) 7 hours

D) 1.5 hours

Explanation

Rate = 1/3 + 1/4 = 7/12 per hour. Time = 12/7 hours.

Practice More Mathematics Questions

Browse all questions