Question

Average weight of 3 men A, B and C is 84 kg. Another man Djoins the group and the average now becor
80kg. If another man E whose weight is 3 kg more than that of D replaces A then the average weight of
C, D and E becomes 79 kg. The weight of A in kg is:
1.80
2. 72
4.75
5.74​

Answer 1

From question

A + B + C = 3 x 84 = 252 ....(i)

A + B + C + D = 4 x 80 = 320 ...(ii)

From eq. (ii) - (i)

D = ( 320 - 252 ) = 68

From question E = D + 3

⇒ E =( 68 + 3 ) = 71

Now , B + C + D + E = 4 x 79 = 316

∴ B + C + D = 316 – 71 = 245

So , A = 320 - 245 = 75 kg .

Answer 2

Answer:

here is your answer.........