Give a quick stream of consciousness before answering the following question. How much 60% of 50 is greater than 50% of 30?
Options:
(A) 18
(B) 91
(C) 11
(D) 17
(E) 15
(60/100) * 50 – (50/100) * 30
30 - 15 = 15
The answer: (E).