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Question : The average weight of A, B and C is 65 kg. If the average weight of A and B is 63.5 kg, and the average weight of A and C is 67.5 kg, then the weight of A (in kg) is:

Option 1: 67

Option 2: 60

Option 3: 68

Option 4: 65


Team Careers360 15th Jan, 2024
Answer (1)
Team Careers360 21st Jan, 2024

Correct Answer: 67


Solution : The average weight of A, B and C = 65 kg
The sum of weights of A, B and C = 65 × 3 = 195 kg
The average weight of A and B = 63.5 kg
The sum of weights of A and B = 63.5 × 2 = 127 kg
Weight of C = 195 – 127 = 68 kg
The average weight of A and C = 67.5 kg
The sum of weights of A and C = 67.5 × 2 = 135 kg
Weight of A = 135 – 68 = 67 kg
Hence, the correct answer is 67.

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