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Two pipes can fill a tank in 15 hours and 25 hours respectively. If both pipes a

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Question: Two pipes can fill a tank in 15 hours and 25 hours respectively. If both pipes are opened together, how long will it take to fill the tank?

Options:

  1. 10 hours
  2. 12 hours
  3. 15 hours
  4. 20 hours

Correct Answer: 12 hours

Solution: 

The combined rate is 1/15 + 1/25 = 5/75 + 3/75 = 8/75. Therefore, it will take 75/8 hours or 9.375 hours.

Two pipes can fill a tank in 15 hours and 25 hours respectively. If both pipes a

Practice Questions

Q1
Two pipes can fill a tank in 15 hours and 25 hours respectively. If both pipes are opened together, how long will it take to fill the tank?
  1. 10 hours
  2. 12 hours
  3. 15 hours
  4. 20 hours

Questions & Step-by-Step Solutions

Two pipes can fill a tank in 15 hours and 25 hours respectively. If both pipes are opened together, how long will it take to fill the tank?
  • Rate of Work – Understanding how to calculate the rate at which each pipe fills the tank and how to combine these rates.
  • Fraction Addition – Adding fractions with different denominators to find a common rate.
  • Time Calculation – Calculating the total time taken to fill the tank based on the combined rate.
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