###
**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. The weight if A is-
**

A. 70 kg B. 72 kg C. 75 kg D. 80 kg
**Answer: Option C**

## Show Answer

Solution(By Apex Team)

Let A, B, C, D and E represent their respective weights. Then, A + B + C = (84 × 3) = 252 kg A + B + C + D = (80 × 4) = 320 kg D = (320 – 252) kg = 68 kg E = (68 + 3 ) kg = 71 kg B + C + D + E = (79 × 4) = 316 kg Now, = (A + B + C + D) – (B + C + D + E) = (320 – 316) kg = 4 kg A – E = 4 A = (4 + E) A = 75 kg

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