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Question 60
A train covers a certain distance in 45 minutes.If its speed is reduced by 5 km/h,it takes 3 minutes more to cover the same distance. The distance (in km)is:
Solution
Distance = speed *time
Now let speed be v
So distance = v*45
Now by condition
we get 45v = (V-5)(48)
We get 45v=48v-240
we get v =80km/hr
Now distance in Km/hr = (80)(45)/60 = 60km
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