Work Problem 3
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Lesson Summary:
In this lesson, you will learn how to write and solve equations to determine how long it takes for two people to complete a job together. The example problem involves Mary and Beth vacuuming a room. By using the formula rate times time equals work, the transcript explains how to find the variable x, which represents the amount of time both Mary and Beth work together. The answer is 6 minutes, and the lesson emphasizes the importance of checking your work and not making common mistakes when solving work problems.
Lesson Description:
Writing and solving equations to find out how long it takes for two people to complete a job together.
More free YouTube videos by Julie Harland are organized at http://yourmathgal.com
Questions answered by this video:
- How do you solve word problems about the amount it time it takes to do a certain amount of work?
- How do you write an solve an equation about two people doing the same job together?
- How can you check your solution to a word work problem?
- If Mary takes 10 minutes to vacuum a room, and Beth takes 15 minutes, how long will it take them to vacuum the room if they work together?
- How do you solve x/10 + x/15 = 1?
- How do you solve an equation with fractions by eliminating fractions from the beginning?
- How can you estimate how long it will take to complete a task before solving?
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Staff Review
This is another great lesson about two people doing the same job together. You will learn how to determine how long it takes for them to complete the job together if you know how long it takes each of them alone. The concepts behind how this works are explained very well.
