Q413
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:
A.
65
AnswerB.
67
C.
60
D.
68
Answer: Option A
Solution
Answer: Option A
Solution:
A + B + C = 65 × 3 = 195 . . .. . . . (i)B + C = 61.5 × 2 = 123 . . . . . . . . (ii)
A + C = 68.5 × 2 = 137 . . . . . . . . (iii)
C = (123 + 137) - 195 = 65