A train passes a 110-meter long bridge in 12 seconds and a standard sign post in 7 seconds. Find the length of the train. MCQ with Answer and Explanation
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Question #1
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If a man walks at 12 km/h instead of 9 km/h, he travels 15 km more in the same time. Find the actual distance traveled by him.
Correct Answer: Option A
Explanation:
Let the time duration be t hours. Difference in distance = 12t - 9t = 3t = 15 km => t = 5 hours. Actual distance traveled = 9 * 5 = 45 km.
Let the time duration be t hours. Difference in distance = 12t - 9t = 3t = 15 km => t = 5 hours. Actual distance traveled = 9 * 5 = 45 km.
This question belongs to:
Maths
Time Speed and Distance
Question #2
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A boat crew row a boat 36 km downstream in 4 hours and tracks the identical loop back upstream in 6 hours. Find the baseline speed of the boat in still water.
Correct Answer: Option D
Explanation:
Downstream tracking speed = 36 / 4 = 9 km/h. Upstream tracking speed = 36 / 6 = 6 km/h. Speed in still water = (9 + 6) / 2 = 15 / 2 = 7.5 km/h.
Downstream tracking speed = 36 / 4 = 9 km/h. Upstream tracking speed = 36 / 6 = 6 km/h. Speed in still water = (9 + 6) / 2 = 15 / 2 = 7.5 km/h.
This question belongs to:
Maths
Time Speed and Distance
Question #3
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A cyclist covers 500 meters in exactly 1 minute 40 seconds. Find his speed in km/h.
Correct Answer: Option C
Explanation:
Time = 1 minute 40 seconds = 100 seconds. Speed = 500 / 100 = 5 m/s. In km/h = 5 * (18/5) = 18 km/h.
Time = 1 minute 40 seconds = 100 seconds. Speed = 500 / 100 = 5 m/s. In km/h = 5 * (18/5) = 18 km/h.
This question belongs to:
Maths
Time Speed and Distance
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