The average weight of a group of 4 boys and 6 girls is 64 kg. The average weight of the boys is 70 kg. What is the average weight of the girls?
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Answer:
60 Kg
Step-by-step explanation:
4g+6b=10 children
avg= 64 kg
so total is 64*10=640 kg
4 boys' avg wt is 70kg
total wt of 4 boys=70*4
=280 kg
subtract this from 640
we get
360 which is total wt of 6 girls
so avg wt of girls is
360/6
=60 kg ANSWER
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