The length of a rectangle is increased by 25% and its breadth is decreased by 20%. What is the effect on its area?
Options:
(A) 10000
(B) 28869
(C) 10002
(D) 18089
(E) 10004
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100 * 100 = 10000
125 * 80 = 10000 So the answer is: (A).
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A motorcyclist goes from Bombay to Nagpur, a distance of 600 kms at an average of 120 kmph speed. Another man starts from Bombay by car 1 hours after the first, and reaches Nagpur hour earlier. What is the ratio of the speed of the motorcycle and the car?
Options:
(A) 1:2
(B) 1:7
(C) 1:9
(D) 3:5
(E) 1:1
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T = 600/120 = 5 h
T = 5 - 2 = 3
Time Ratio = 5:3
Speed Ratio = 3:5 So the answer is: (D).
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Which one of the following is a prime number?
Options:
(A) 45
(B) 90
(C) 81
(D) 29
(E) 91
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73 is divisible by 1 and itself So, it is a prime number. So the answer is: (D).
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