SOLUTION: If the speed of the train is increased by 5 km/hr from its normal speed it would have taken 2hours less to cover 300kms.what is its normal speed?

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Question 1040193: If the speed of the train is increased by 5 km/hr from its normal speed it would have taken 2hours less to cover 300kms.what is its normal speed?
Answer by ikleyn(52900) About Me  (Show Source):
You can put this solution on YOUR website!
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If the speed of the train is increased by 5 km/hr from its normal speed it would have taken 2 hours less to cover 300 kms.
what is its normal speed?
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Let x be the normal speed, in km%2Fh.
Then  t%5B1%5D = 300%2Fx  is the time spent for the journey at the speed of x km%2Fh.

Also,  t%5B2%5D = 300%2F%28x%2B5%29  is the time spent for the journey at the speed of (x+5) km%2Fh.

We are given that t%5B1%5D - t%5B2%5D = 2. 

It gives an equation 

300%2Fx - 300%2F%28x%2B5%29 = 2.

Solve it for x. The first step is to multiply both sides by x*(x+5).

Answer. 25 km%2Fh.