Question

The average weight of a group of seven boys is 56 kg. The individual weights (in kg) of 6 of them are 52,57,55,60,59 and 55. find the weight of the seventh boy​

Answer 1

54

Explanation:

338÷6=56.33

so it means that 7th boy is less than 56

338+54=392

392÷7=56

Answer 2

54 kg

Explanation:

Total weight of 7 boys is 392 kg. And other 6 boys total weight is 338 kg.

So the 7th boy's weight is (392-338)=54 kg