A Gift box contains 10 bangles, of which average weight of f

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A Gift box contains 10 bangles, of which average weight of first 4 bangles is 74 grams and the average weight of remaning 6 bangles is 75 grams. Find the average weight of the total bangles.(in grams)

[RPF 16 Jan 2019]

A 73.6

B 74.6

C 72.6

D 71.6