Question

Two trains are on the same track heading for each other they're two miles apart wondering is going 30 miles per hour the other train is going 10 miles for how many minutes will it take before they meet each other?

Answer 1

if you put the frame of reference on one train, the trains then are approaching at 40mph.

time=distance/speed=10miles/40mph
= 1/4 hr or 15 min.