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

To find a reasonable number of runners in each group, we need to divide the total number of runners (522) by the number of groups (6).

This would be approximately 522/6 = 87.

Therefore, the reasonable number of runners in each group would be 87.

The correct answer is C) 87.

To find a reasonable number of runners in each group, you can divide the total number of runners (522) by the number of groups (6). This division will give you an estimate of how many runners should be in each group.

Let's calculate:

522 runners รท 6 groups = 87 runners per group (approximately)

Therefore, the reasonable number of runners in each group is 87. So, the answer is C.