Question

Two trains A and B run in opposite directions. They start from the same point at uniform speeds of 45 km/hr and 50 km/hr. The distance between them after 4 hrs will be:

• A. 370 km
• B. 380 km
• C. 390 km
• D. 400 km

Answer 1

The correct option is B

380 km

Train A and Train B run in opposite directions.

So, we can see that the distance between them is the sum of the distance travelled by them in the given time.

Distance travelled by train A in 4 hrs = speed of train A $\times$ time taken

= 45 $\times$ 4= 180 km

Distance travelled by train B in 4 hrs= speed of train B $\times$ time taken

= 50 $\times$ 4= 200 km

Distance between both the trains = Distance travelled by A + Distance travelled by B

= 180 + 200= 380 km