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15. After 20 minutes at work, Ellen was able to finish 3 tasks. If she works an 8 hour day, howmany tasks should she expect to finish?

User Finrod
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1 Answer

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This problem is about the rule of three.

The given ratio is 20 minutes for 3 tasks done. We need to find the number of taks done after 8 hours.

First, we know that 1 hour is 60 minutes, so the total number of minutes is


8\cdot60=480\min

Now, the rule of three is about the total number of tasks done after 480 minutes, if three tasks take 20 minutes only.

User Mohammed Alfateh
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