1.

The average weight of A, B and C is 65 kg. If the average weight of C and B is 61.5 kg, and the average weight of A and C is 68.5 kg, then the weight of C (in kg) is:1. 652. 683. 674. 60

Answer» Correct Answer - Option 1 : 65

Given:

Average weight of A, B and C = 65 kg

Average weight of C and B = 61.5 kg

Average weight of A and C = 68.5 kg

Formula used:

Average = sum of weights/No of persons

Calculation:

Weight of A, B and C

⇒ (A + B + C)/3 = 65

⇒ A + B + C = 195

Weight of C and B

⇒ (C + B)/2 = 61.5

⇒ C + B = 123

Weight of A and C

⇒ (A + C)/2 = 68.5

⇒ A + C = 137

Weight of A

⇒ 195 - 123

⇒ 72

Weight of C

A + C = 137

⇒ C = 137 - 72

⇒ 65 Kg

∴ The weight of C is 65 Kg.



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