Three taps A, B and C can fill a tank in 12, 15 and 20 hours respectively. If A is open all the time and B and C are open for one hour each alternately, the tank will be full is_______?

A. 6 hrs

B. 6 2/3 hrs

C. 7 hrsCorrect Answer

D. 7 1/2 hrs

Correct Option: C. 7 hrs

This question has been verified by the PakPrep community moderation network for competitive examination accuracy.

Subject Overview

Explore thousands of solved past paper MCQs for Maths Mcqs categorized with explanations.