Pipe A can fill an empty tank in 18 hours and pipe B can fill the same empty tank in 24 hours. If both the pipes are opened simultaneously, how much time (in hours) will they take to fill the empty tank?

This question was previously asked in
SSC CGL 2023 Tier-I Official Paper (Held On: 14 Jul 2023 Shift 4)
View all SSC CGL Papers >
  1. \(11\frac{3}{7}\)
  2. \(10\frac{1}{7}\)
  3. \(10\frac{2}{7}\)
  4. \(11\frac{2}{7}\)

Answer (Detailed Solution Below)

Option 3 : \(10\frac{2}{7}\)
super-subscription-prototype
Free
PYST 1: SSC CGL - English (Held On : 11 April 2022 Shift 1)
3.1 Lakh Users
25 Questions 50 Marks 12 Mins

Detailed Solution

Download Solution PDF

Given:

Pipes A can fill and B can fill a tank in 18 hours and 24 hours respectively..

Concept used:

Entire work = Work done hourly × Total time taken (in hours)

Calculation:

Total capacity = LCM (18, 24) = 72

Now,

Pipe A fill hourly by = 72 ÷ 18 = 4 units

Pipe B fills hourly by = 72 ÷ 24 = 3 units

The total tank will be filled in:

⇒ 72/(4 + 3)

⇒ 10(2/7) hours

They will take to fill the empty tank in 10(2/7) hours.

Latest SSC CGL Updates

Last updated on Jun 13, 2025

-> The SSC CGL Notification 2025 has been released on 9th June 2025 on the official website at ssc.gov.in.

-> The SSC CGL exam registration process is now open and will continue till 4th July 2025, so candidates must fill out the SSC CGL Application Form 2025 before the deadline.

-> This year, the Staff Selection Commission (SSC) has announced approximately 14,582 vacancies for various Group B and C posts across government departments.

->  The SSC CGL Tier 1 exam is scheduled to take place from 13th to 30th August 2025.

->  Aspirants should visit ssc.gov.in 2025 regularly for updates and ensure timely submission of the CGL exam form.

-> Candidates can refer to the CGL syllabus for a better understanding of the exam structure and pattern.

-> The CGL Eligibility is a bachelor’s degree in any discipline.

-> Candidates selected through the SSC CGL exam will receive an attractive salary. Learn more about the SSC CGL Salary Structure.

-> Attempt SSC CGL Free English Mock Test and SSC CGL Current Affairs Mock Test.

-> Candidates should also use the SSC CGL previous year papers for a good revision. 

More Pipe and Cistern Questions

More Time and Work Questions

Get Free Access Now
Hot Links: teen patti master apk download teen patti download teen patti flush