Two automobiles are 150 kilometers apart and traveling toward each other.One automobile is moving at 60 km/h and the other is moving at 40 km/h.In how many hours will they meet?
A)2.5 h
B)2.0 h
C)1.75 h
D)1.5 h
E)1.25 h

Question

Quizplus · Accepted Answer

We can use the formula: distance = rate x time
Let's call the time we are looking for "t". 
Car 1 travels a distance of (60 km/h)(t) in t hours. 
Car 2 travels a distance of (40 km/h)(t) in t hours. 
When they meet, the combined distance they travel is 150 km. 
So we can set up the equation: 
(60 km/h)(t) + (40 km/h)(t) = 150 km
Simplifying this equation gives: 
100t = 150
t = 1.5 hours. 
Therefore, the answer is D.

Two Automobiles Are 150 Kilometers Apart and Traveling Toward Each