Question

Two trains leave stations 390 miles apart at the same time and travel toward each other. One train travels at 65 miles per hour while the other travels at 85 miles per hour. How long will it take for the two trains to meet?

Answer 1

let t hours be the time they meet
distance travelled by the slower train = 65t
distance travelled by the faster train = 85t
65t + 85t = 390

carry on