Question

A train travelling at a uniform speed for 480 km would take 48 minutes more to travel that distance, if its speed was reduced by 20 km/h. Find the original speed of the train.

Answer 1

Answer:

Given:

A train travelling at uniform speed for 480km would take 48 minutes more to travel that distance if speed is reduced by 20km/h ,

To Find:

Find original speed of train​

Solution:

Let the speed of train be x

Distance = 480 km

Formula:

So,

Now speed is reduced by 20 km/hr

So,

Since we are given that A train travelling at uniform speed for 480km would take 48 minutes more to travel that distance if speed is reduced by 20km/h  

So,

Since the speed cannot be negative

So, Speed of train = 120 km/hr

Result:

Hence The original speed of train is 120 km/hr

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Answer 2

Answer:

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