Question

In a class of 20 girls and 15 boys the average weight of the glass is 42 kg the average weight of the boys is 14.5 kg what is the average weight of the girls

Answer 1

Answer:

62.625 kg

Step-by-step explanation:

35*42 = 15*14.5 + 20*x

1470 - 217.5 = 20x

1252.5 = 20x

x =62.625