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1). 472). 453). 434). 49 |
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Answer» <P>LET the weight of A, B and C be p, q and r According to the problem statement ⇒ (p + q + r)/3 = 49 ⇒ p + q + r = 147----(1) Now given that average weight of A and B is 35 kg ⇒ (p + q)/2 = 35 ⇒ p + q = 70 ----(2) Now, (1) – (2) ⇒ r = 147 – 70 = 77----(3) Now given that average weight of B and C is 62 kg ⇒ (q + r)/2 = 62 ⇒ q + r = 124 Using (3) ⇒ q = 124 – 77 = 47 YEARS ∴ the weight of B is 47 years |
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