A is 120% of B and B is 65% of C. If the sum of A, B and C is 121.5, then the value of C - 2B + A is:
Answer & explanation
Correct answer: option 3
A is 120% of B
A : B
6 : 5
B is 65% of C
B : C
65 : 100
13 : 20
Now , A : B : C
78 : 65 : 100
A + B + C = 243R
243R = 121.5
1R = 0.5
Now , C - 2B + A = 100 × 0.5 - 2 × 65 × 0.5 + 78 × 0.5
= 50 - 65 + 39 = 24