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A marathon race has 522 runners divided into 6 groups. What is a reasonable number of runners in each group?
A 112, because 522/6 is about 550/5=110
B 98, because 522/6 is about 500/5=100
C 87, because 522/6is about 540/6=90
D 82, because 522/6 is about 480/6=80

Divide. Do it in your head. Let us know what you think.

C 87, because 522/6 is about 540/6=90

A

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