Question

A train traveling at an average speed of 40 km per hour reaches the destination at the scheduled time. If it travels at an average speed of 30 km per hour, it is 15 minutes later than the scheduled time at the destination Reaches; So what is the total distance she has to cover?​

Answer 1

Step-by-step explanation:

A train when moves at an average speed of 40 kmph reaches its destination on time.

Now lets put it mathematically:

40Y = X

35Y = X-8.75

So, 35Y = 40Y-8.75

Or, 8.75 = 40Y-35Y

8.75 = 5Y

8.75/5 = Y

Or Y = 1.75

Hence, number of hours Train 1 takes to reach destination is 1.75 Hours. So it travels 70 kms (40 x 1.75).

Therefore the distance between station 1 and 2 is 70 Kms.

Train 1 takes 1.75 hours at 40 kmph (70/40).

Train 2 takes 2 hours at 35 kmph (70/35).

The difference is 15 mins.