SSC CGL Tier 2 Exam 12 Jan 2017 Paper 1

(3) According to the question,
A + B + C = 84 × 3 = 252 kg. ..... (i)
A + B + C + D = 80 × 4 = 320 kg. ..... (ii)
By equation (ii) – (i),
D = 320 – 252 = 68 kg.
E = 68 + 3 = 71 kg.
∴ B + C + D + E = 79 × 4 = 316 kg.
⇒ B + C + 68 + 71 = 316
⇒ B + C = 316 – 68 – 71 = 177 kg. ..... (iii)
By equation (i) – (iii),
A’s weight = (252 – 177) kg. = 75 kg.