# What will be the Weight of A? If

The average weight of 3 Men A, B and C is 84 kg. Another man D joins the group and the average now becomes 80 kg. If another man E whose weight is 3 kg more than that of D, replaces A, then the average weight of B, C, D and E becomes 79 kg. Then weight of A is:

- 75 kg
- 76 kg
- 72 kg
- 74 kg

**Answer: (1) 75 kg **

**Explanation:-**

The average weight of A,B and C = 84Kg

The total weight of A, B and C = 84 x 3 = 252Kg.

The average weight of A, B , C and D = 80 kg

The total weight of A, B, C and D = 80 x 4 = 320 kg

The weight of D = 320 – 252 = 68 kg

The weight of Q = 68 + 3 = 71 kg

The average weight of B, C ,D and E = 79 kg

The total weight of B, C, D and E = 79 x 4 = 316 kg

The total weight of A,B, C and D – the total weight of B,C,D and E = 320 – 316 = 4 kg

A – E = 4

A = 4 + E

A = 4 + 71

A = 75 Kg

Hence, the weight of A is 75 Kg.