Question

Two cities are 2310 miles apart. a plane leaves one of? them, traveling towards the other at an average speed of 380 miles per hour. at the same time a plane leaves the? other, traveling towards the? first, at an average speed of 390 miles per hour. how long will it take them to? meet?

Answer 1

let H = hours

380H + 390H =2310

770H=2310

2310/770 = 3

H=3 hours