9. A train takes 6 hours to complete a journe at a speed of 72 kmh. How long will another train
take to complete the same journey if its speed is 15 m/s? full explanation
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Ans:- 8 Hour
EXPLANATION:-
Speed of train:-72km/h
Time taken:-6hr
Distance covered:-432 Km
Another train:-
Speed:-15 m/s = 15x18/5 =54 Km/h
So,Time taken is =432 Km/54 Km/hr =8 hr
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