Consider the following:
Weight of 6 boys = Weight of 7 girls = Weight of 3 men = Weight of 4 women
If the average weight of the women is 63 kg, then what is the average weight of the boys?
A.40 kg
B.42 kg✓ Correct
C.45 kg
D.63 kg
Explanation
Let total weight = W. Average weight of women = W/4 = 63, so W = 252 kg. Average weight of boys = W/6 = 252/6 = 42 kg. Hence the average weight of the boys is 42 kg.
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