Pipe A fills a tank in 10 hours, Pipe B in 15 hours. How long to fill together?

A5 hours

B6 hours

C8 hours

D12 hours

Explanation

Rate = 1/10 + 1/15 = (3+2)/30 = 5/30 = 1/6. Time = 6 hours.

Exam Relevance

Topic: Work and Time
Subtopic: Pipes

Submitted by: mcqstutor Team More Mathematics MCQs →