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2 years ago

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Mathematics

1 answer:

den301095 [7]2 years ago

4 0

Answer:

Option 4

Step-by-step explanation:

Group B, because seven children have a forearm length longer than 10 inches.

Additional verification :

Finding average forearm length of Group A :

9(3) + 10(5) + 11(2) / 10
27 + 50 + 22 / 10
99/10
9.9

Finding average forearm length of Group B :

10(3) + 11(4) + 12(3) / 10
30 + 44 + 36 / 10
100/10
10

Group B clearly has the longer forearm length.

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