The everage weight of 30 out of 40 boy in a class 60kg and the avetage weight of remau each 56 kg ,find the everage of the whole class?
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Step-by-step explanation:
total average weight of 30 boys =30 x 60kg = 1800kg
total average weight of 10 boys = 56kg x 10 =560kg
sum of all average weight of 40 boys= 1800kg + 560 kg= 2360kg
average weight of whole class =2360kg
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