How to Solve Work Problem Part 2

This is the second part of the Solving Work Problems Series. In the previous post, we have discussed in detail the concept behind how to solve work problems.  In this post, we are going to learn more examples and solve more complicated problems.

Problem 2

A hose can fill a pool in 3 hours, while a smaller hose can fill it in 5 hours. If the hoses are opened together the same time, how many hours will they be able to fill the pool?

Solution

House A can fill the pool in 3 hours, so it can fill 1/3 of the pool in 1 hour.

House A can fill the pool in 5 hours, so it can fill 1/5 of the pool in 1 hour.

Together, they can fill 1/3 + 1/5 of the pool in 1 hour.  » Read more

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