Reasoning: D = 540 + 180 = 720
S = 54 * 5/18 = 15 mps
T = 720/15 = 48 se
Ans: (C)
Question: A train 540 meters long is running with a speed of 54 kmph. The time taken by it to cross a tunnel 180 meters long is?
Options:
(A) 66 sec
(B) 46 sec
(C) 48 sec
(D) 65 sec
(E) 64 sec
Rationale: 1/8 + 1/24 = 1/6
6 * 2 = 12
The answer: (C)
Question: Pipes A and B can fill a cistern in 8 and 24 minutes respectively. They are opened an alternate minutes. Find how many minutes, the cistern shall be full?
Options:
(A) 10
(B) 26
(C) 12
(D) 24
(E) 48
Reasoning: 12 Rupees = 1200paisa's
36/1200 100 = 3/12
12/3 = 3 %
Ans: (A)
Question: What percent is 36 paisa's of 12 rupees?
Options:
(A) 3 %
(B) 4 %
(C) 5 %
(D) 6 %
(E) 7 %
Rationale: The total distance D traveled by John is given by
D = 45 * 2 + 3 * 55 = 255 miles.
The answer: (C)
Question: John left home and drove at the rate of 45 mph for 2 hours. He stopped for lunch then drove for another 3 hours at the rate of 55 mph to reach his destination. How many miles did John drive?
Options:
(A) 235 miles.
(B) 245 miles.
(C) 255 miles.
(D) 265 miles.
(E) 275 miles.
Reasoning: 5C3 * 5C2 * 3C2 = 10*10*3 = 300.
Ans: (E)
Question: An analyst will recommend a combination of 3 industrial stocks, 2 transportation stocks, and 2 utility stocks. If the analyst can choose from 5 industrial stocks, 5 transportation stocks, and 3 utility stocks, how many different combinations of 7 stocks are possible?
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Options:
(A) 12
(B) 19
(C) 60
(D) 180
(E) 300
Reasoning: Final number = original number - 30%(original number) = 50 - 30%(50) = 50 - 15 = $35.
Ans: (B)
Question: Amanda sees a sale for 30% off all items, she sees a dress on sale that originally cost $50. How much will it cost Amanda to buy the dress after the sale amount of 30% has been take off?
Options:
(A) $40
(B) $35
(C) $50
(D) $65
(E) $15