The average weight of 10 boys is more than the average weight of 15 girls by 5 kg. If the total weight of the 10 boys is 550 kg, what is the average of the 10 boys and 15 girls together?
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Step-by-step explanation:
Let the total weight of the girl be x .
(Total weight of boys)/10
=>550/10
=>55 kg
Now,
y=55-5
=50
So, y÷15 =50
y=750kg
total weight of boy and girl = 550+750
=1300kg
Avg. weight = 1300/25
=52 kg
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