An express train covers a distance of 450 km in 5 hours. If a slower local train runs at half the speed of the express train, how much time will the local train take to cover 360 km? MCQ with Answer and Explanation
An express train covers a distance of 450 km in 5 hours. If a slower local train runs at half the speed of the express train, how much time will the local train take to cover 360 km?
A. 6 hours
B. 7 hours
C. 8 hours
D. 9 hours
Answer: Option C
Solution (By JKSSB Mock Tests)
Speed of express train = 450 / 5 = 90 km/h. Speed of local train = 90 / 2 = 45 km/h. Time taken by local train = 360 / 45 = 8 hours.
Explanation:
Speed of first car = 320 / 4 = 80 km/h. Ratio of speeds is 4:5, so 4 parts = 80 km/h => 1 part = 20 km/h. Speed of second car = 5 parts = 5 * 20 = 100 km/h.
Excluding institutional stops, the speed of an intercity coach is 72 km/h and including stops it is 60 km/h. For how many minutes does the coach stop per hour?
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