Question #c41bf

1 Answer
smendyka ยท SoySoy4444
Dec 26, 2017

60 minutes
See a solution process below:

Explanation:

Assuming each teacher can grade an essay in the same amount of time:

2" teachers" xx 90 " minutes" = 180" minutes"

It took the two teachers 180 total minutes to grade 30 essays.

If we divide the 180 minutes by 3 we can find how long it would take for 3 teachers:

(180" minutes")/3 = 60" minutes"

It would take 3 teachers 60 minutes to grade the 30 essays.

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