Solve.
-If two planes leave an airport at the same time with one flying west at 230 miles per hour and the other flying east at 550 miles per hour, how long will it take them to be 2340 miles apart?
A) 2.5 hr
B) 4 hr
C) 2 hr
D) 3 hr

Question

Quizplus · Accepted Answer

The planes are moving apart at a combined speed of 230 mph + 550 mph = 780 mph. To find the time it takes for them to be 2340 miles apart, divide the distance by their combined speed: 2340 miles / 780 mph = 3 hours.

Solve. -If Two Planes Leave an Airport at the Same Time