Question

The average weight of Karan, Sarosh and Vignesh is 45 kg. If the average weight of Karan and Sarosh be 40 kg and that of Sarosh and Vignesh be 43 kg, then the weight of Sarosh is:

• A. 30
• B. 31
• C. 32
• D. 33
• E. None of these

Answer 1

The correct option is B

31

Let A, B, C represent the weights of Karan, Sarosh and Vignesh respectively.

Then, we have: A + B + C = (45 x 3) = 135.... (i)

A + B = (40 x 2) = 80 .... (ii)

B + C = (43 x 2) = 86 ....(iii)

Adding (ii) and (iii), we get: A + 2B + C = 166.... (iv)

Subtracting (i) from (iv),

we get : B = 31.

Sarosh's weight = 31 kg.