If a tank is filled by two pipes A and B in 12 hours and 15 hours respectively,

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What’s inside this PDF?

Question: If a tank is filled by two pipes A and B in 12 hours and 15 hours respectively, how long will it take to fill the tank if both pipes are opened together?

Options:

6 hours
7 hours
8 hours
9 hours

Correct Answer: 8 hours

Solution:

The combined rate is 1/12 + 1/15 = 5/60 + 4/60 = 9/60 = 3/20. Therefore, it will take 20/3 hours or approximately 6.67 hours.

If a tank is filled by two pipes A and B in 12 hours and 15 hours respectively,

Practice Questions

If a tank is filled by two pipes A and B in 12 hours and 15 hours respectively, how long will it take to fill the tank if both pipes are opened together?

6 hours
7 hours
8 hours
9 hours

Questions & Step-by-Step Solutions

If a tank is filled by two pipes A and B in 12 hours and 15 hours respectively, how long will it take to fill the tank if both pipes are opened together?

Rate of Work – Understanding how to calculate the rate at which each pipe fills the tank and how to combine these rates.
Combined Work Rate – Applying the formula for combined work rates when multiple entities are working together.
Time Calculation – Converting the combined rate into time taken to complete the work.

If a tank is filled by two pipes A and B in 12 hours and 15 hours respectively,

What’s inside this PDF?

If a tank is filled by two pipes A and B in 12 hours and 15 hours respectively,

Practice Questions

Questions & Step-by-Step Solutions

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