Correct Answer - Option 3 : 9 : 6 : 8
Given:
A is 50% more efficient than B, B is 25% less efficient than C.
Calculation:
50% more = + 1/2, 25% less = - 1/4
∴ Take efficiency of C= 2 × 4 = 8
Suppose efficiency of C = 8
⇒ Efficiency of B =75% of C = 3/4 × 8 = 6
⇒ Efficiency of A =150% of B = 3/2 × 6 = 9
∴ Ratio of efficiency of A : B : C = 9 : 6 : 8.