Question

Emilie can complete a job in 10 minutes, while Erica can complete the same job in 15 minutes. How long would it take them to complete the job working together? (In minutes.) Rate of work problem.

Answer 1

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Answer:

6 minutes

Explanation:

The rates add when expressed in terms of jobs per minute.

1/10 + 1/15 = 3/30 + 2/30 = 5/30 = 1/6

The two together can complete 1/6 jobs per minute, so it will take them 6 minutes to complete 1 job.