1.

1). 472). 453). 434). 49

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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