Question

Two trains going in opposite directions leave at the same time. Train B travels 5 mph faster than train A. In 7 hours the trains are 665 miles apart. Find the speed of each.​

Answer 1

below

Explanation:

x = train A speed

x+5 = train B speed

rate * time = distance

(x + x+5 ) * 7 = 665

14x + 35 = 665

14x = 630

x = 45 mi/hr = A B = 5+ A = 50 mi/hr