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.150. Find the unknown rate of two blankets?
Options:
(A) 278
(B) 277
(C) 278
(D) 450
(E) 272
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10 * 150 = 1500
3 * 100 + 5 * 150 = 1050
1500 1050 = 450 So the answer is: (D).
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How much is 80% of 40 is greater than 4/5 of 25?
Options:
(A) 229
(B) 87
(C) 26
(D) 12
(E) 667
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(80/100) * 40 (4/5) * 25
32 - 20 = 12 So the answer is: (D).
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If the average (arithmetic mean) of the four numbers K, 2K + 3, 4K 4 and 5K + 1 is 63, what is the value of K?
Options:
(A) 11
(B) 15 3/4
(C) 21
(D) 23
(E) 25 3/10
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K + 2K +3 + 4K - 4 + 5K +1 = 12K
(12K)/4 = 63
12K = 63 * 4 = 252
K = 252 / 12 = 21 So the answer is: (C).
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