Question

Two trains are traveling towards each other at a constant speed. The trains are currently 714 miles from each other. The speeds of the trains differ by 8 miles per hour. The trains will meet in 7 hours. What is the speed of the faster train?

Answer 1

speed of slower train=x, faster=x+8
7(x+x+8)=714
2x+8=714/7
2x=102-8
x=94/2=47 miles/hr
faster train =47+8=55miles/hr