Consider the following: Weight of 6 boys = Weight of 7 girls = Weight of 3 men = Weight of 4 women. If the…
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?
40 kg
42 kg
45 kg
63 kg
Solution
Average weight of women = 63 kg, so total weight of 4 women = $63 \times 4 = 252$ kg. Since weight of 6 boys = weight of 4 women = 252 kg, the average weight of a boy = $252/6 = 42$ kg.