A certain number when divided by 45 leaves a remainder 31, what is the remainder if the same number be divided by 15?
Options:
(A) 13
(B) 11
(C) 9
(D) 1
(E) 3
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45 + 31 = 76/15 = 1 (Remainder) So the answer is: (D).
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A train 70 m long, running with a speed of 63 km/hr will pass a tree in?
Options:
(A) 4 sec
(B) 16 sec
(C) 6 sec
(D) 20 sec
(E) 8 sec
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Speed = 63 * 5/18 = 35/2 m/sec
Time taken = 70 * 2/35 = 16 sec So the answer is: (A).
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Rs. 5000 is divided into three parts A, B and C. How much A is more than C if their ratio is 1/5:1/5:1/10?
Options:
(A) 1000
(B) 992
(C) 772
(D) 552
(E) 312
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1/5:1/5:1/10 = 2:2:1
1/5*5000 = 1000
2000-1000 = 1000 So the answer is: (A).
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