Math, asked by rishabh9987, 11 months ago

The average weight of A,B and C is 80 kg. If D joins the group, the average weight becomes 84 kg. When E joins the group, the average weight becomes 3 kg more than the group, where D replaces A. Find the weight of A​

Answers

Answered by Anonymous
2

Average weight of a b and c = 80 kg

weight of a + b + c /3 = 80 kg

sum of weight of a b and c = 80 kg × 3

= 240kg

average weight when d join group = 84 kg

sum of weight of a b c and d = 84kg × 4

= 336kg

therefore mass of d = 336kg - 240kg

= 94 kg

when is e join the group the average weight become 3 kg more than the group where d replace a.

weights of a b c e /4 = 83 kg

weight of a = 83×4 - 240kg

=342 kg - 240kg

= 112 kg.

Hope it helps you.

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Answered by kumar19686
0

Answer:

111 is the answer... you can find the averages and calculate it...

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