Solve the problem.
-An airplane leaves Los Angeles for Denver at a speed of 450 mph. Thirty minutes later, a plane going from Denver to Los Angeles leaves Denver, which is 850 miles from Los Angeles, at a speed of 470 mph. When they
Meet, how far are they from Denver?
A) 319 mi
B) 111 mi
C) 277 mi
D) 55 mi

Question

Quizplus · Accepted Answer

The first plane travels for 0.5 hours before the second plane departs, covering 225 miles (450 mph * 0.5 hours). When the second plane departs, the distance between them is 625 miles (850 - 225). The planes are moving towards each other at a combined speed of 920 mph (450 + 470). They meet after 625/920 hours, during which the second plane travels 319 miles (470 * 625/920).

Solve the Problem. -An Airplane Leaves Los Angeles for Denver at a Speed