GMAT Pipes and Cisterns — practice questions

Explore 1 free Pipes and Cisterns questions in GMAT Quantitative Reasoning. Open each question or exercise to read its content, reference answers and available explanation.

Practise Pipes and Cisterns with Quill →

Pipes and Cisterns questions and exercises with answers

Showing questions 1–1 of 1.

Two pipes fill in 20 and 24 minutes; a waste pipe empties 3 gal/min. All three together fill in 15 min. Capacity:Read the answer and worked solution →

Worked practice questions

Two pipes fill in 20 and 24 minutes; a waste pipe empties 3 gal/min. All three together fill in 15 min. Capacity:

60 Gallons
100 Gallons
120 Gallons
180 Gallons

Show answer and solution

Correct answer: C. 120 Gallons

1. Let capacity be V. Fill rates: V/20 + V/24 − 3 = V/15. 2. Common denom 120: 6V/120 + 5V/120 − 360/120 = 8V/120 → 11V − 360 = 8V → 3V = 360. 3. V = 120 gallons. _Source: KMAT Karnataka 2023 PYQ Q.43_

Open this question →

How to practise

Choose a Pipes and Cisterns question and try to work out your answer.
Open the question to check the correct answer and read its worked solution.
Continue in the app for bite-sized lessons, explanations and review with Quill. You can start without creating an account.

Put it into practice

Continue with Pipes and Cisterns practice for GMAT. Read explanations as you go. No signup form needed to start.

Practise Pipes and Cisterns →