Give a quick stream of consciousness before answering the following question. 1500 is increased by 20%. Find the final number.
Options:
(A) 1500
(B) 1800.
(C) 1900
(D) 1700
(E) 1660
Final number = Initial number + 20%(original number) = 1500 + 20%(1500) = 1500 + 300 = 1800.
The answer: (B).