In an exam the sum of the scores of A and B is 120 :

In an exam the sum of the scores of A and B is 120, that of B and C is 130 and that of C and A is 140. Then the score of C is:

  1. 65
  2. 75
  3. 70
  4. 60
Anurag Mishra Professor Asked on 11th December 2015 in Maths.
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1 Answer(s)

Answer: (2) 75

Explanation:-

The sum of the scores of A and B = 120 
The sum of the scores of B and C = 130
The sum of the scores C and A = 140

Then, the sum of the scores of A, B and C = (120 + 130 + 140)/2
 = 390/2
 = 195 

The scores of C = The scores of A, B and C – the scores of A and B 
 = 195 – 120
 = 75

Then, the scores of C is 75. 

Hence, the answer is (2) 75. 

Anurag Mishra Professor Answered on 11th December 2015.
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