Question

Two trains for Mumbai leave Delhi at 6 a.m. and
6:45 a.m. and travel at 100 kmph and 136 kmph
respectively. How many kilometers from Delhi will
the two trains be together?
A. 272 km B. 260 km C. 283.33 km D. 262.4 km
3. The length of the bridge, which a train 130 metres
long and travelling at 45 km/hr can cross in 30
seconds, is:
200m B.225m 0.245m D. 250m​

Answer 1

Answer:

283.3

Step-by-step explanation:

In the first 45 minutes, train A is able to travel 100 kmh * (3/4) h = 75 km.

The relative speed of the second train to the first train is 36 kmh. Thus we need to find the time that the second train will take to cover that distance:

D = s*t

75 = 36kmh * t ==> t = 75/36 h

Now we need to find the distance traveled in that amount of time:

D = s*t

D = 136kmh * (75/36)h

D = 283.33 km