Concept explainers
Find the number of minutes required while they worked together.
Answer to Problem 18CCSR
6 minutes
Explanation of Solution
Given:
Karen can mow the lawn in 15 minutes. Her friend Kim can mow the lawn in 10 minutes. If they work together, how many minutes will they take to mow the lawn?
Concept Used:
Time in minutes | Rate ( job/ minute) | Number of job | |
Karen | 15 minute | 1 job | |
Kim | 10 minutes | 1 job |
Calculation:
Time in minutes | Rate ( job/ minute) | Number of job | |
Karen | 15 minute | 1 job | |
Kim | 10 minutes | 1 job |
Karen + Kim combined rate (job/minute) =
Time needed while both working together =
Thus, 6 minutes required while they worked together.
Chapter 11 Solutions
High School Math 2015 Common Core Algebra 1 Student Edition Grade 8/9
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