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:

24

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