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A passenger train without stoppages runs at an average speed of 75 km/h, and with stoppages, at an average speed of 60 km/h. What is the total time (in hours) taken by the train for stoppages on a route of length 600 km?

A passenger train without stoppages runs at an average speed of 75 km/h, and with stoppages, at an average speed of 60 km/h. What is the total time (in hours) taken by the train for stoppages on a route of length 600 km? Correct Answer 2

Given:

Average speed without stoppage = 75kmph

Average speed with stoppage = 60kmph

Distance = 600km

Calculation:

Without stopage train moving for = 600/75 = 8 hours

Train moving with stoppage = 600/60 = 10 hours

Train is static for = 10 - 8 = 2 hours

Ratio of stopped time to moving time = 2 : 8 = 1 : 4

∴ Total time taken by train for stoppages = 1/5 × 10 = 2 hours

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