Quantitative Aptitude – Let A, B and C be three positive integers such


Slot – 1 – Quantitative Aptitude – Let A, B and C be three positive integers such


Q. Let A, B and C be three positive integers such that the sum of A and the mean of B and C is 5. In addition, the sum of B and the mean of A and C is 7. Then the sum of A and B is?
  1. 7
  2. 4
  3. 5
  4. 6

Answer: 6

Solutions:
A+(B+C)/2=5 ->2a+b+c=10
B+(A+C)/2=7 ->2b+a+c=14
subtracting 2 equations we get:
b-a=4 (eliminates option 2 )
Adding 2 equations we get:
3*(a + b)+2c=24
2c will be even so (a + b) also has to be even (eliminates option 3 &4 )
Option 1 is our answer.


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