Give a quick stream of consciousness before answering the following question. A man purchased 3 blankets @ Rs.100 each, 5 blankets @ Rs.150 each and two blankets at a certain rate which is now slipped off from his memory. But he remembers that the average price of the blankets was Rs.154. Find the unknown rate of two blankets?
Options:
(A) 420
(B) 550
(C) 490
(D) 450
(E) 457
10 * 154 = 1540
3 * 100 + 5 * 150 = 1050
1540 1050 = 490
The answer: (C).