How much 60% of 50 is greater than 45% of 30? Choose the correct option:
A) 18
B) 91
C) 16.5
D) 17
E) 12

Rationale: "( 60 / 100 ) * 50 – ( 45 / 100 ) * 30 30 - 13.5 = 16.5 answer : c"
Answer: C