On increasing the speed of a train at the rate of 10 km per hr, 30 minutes is saved in a journey of 100 kms. Find the initial speed of train.

On increasing the speed of a train at the rate of 10 km per hr, 30 min

1.	On increasing the speed of a train at the rate of 10 km per hr, 30 minutes is saved in a journey of 100 kms. Find the initial speed of train.
A.	40 kmph
B.	45 kmph
C.	42 kmph
D.	44 kmph
Answer» B. 45 kmph

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On increasing the speed of a train at the rate of 10 km per hr, 30 minutes is saved in a journey of 100 kms. Find the initial speed of train.

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