1.

A train covers a distance in 50 minutes, if it runs at a speed of 48kmph on an average. Find the speed at which the train must run to reduce the time of journey to 40 minutes.

Answer»

Answer:

Ans is 60 km/hr

Step-by-step EXPLANATION:

We are having time and speed given, so first we will CALCULATE the distance. Then we can get NEW speed for given time and distance.

Lets SOLVE it.

Time = 50/60 hr = 5/6 hr

Speed = 48 mph

Distance = S x T = 48 x 5/6 = 40 km

New time will be 40 minutes

so,

Time = 40/60 hr = 2/3 hr

Now we know,

Speed = Distance/Time

New speed = 40 x 3/2 kmph = 60kmph

* please thanks if you like my ans



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