Two cars start moving from the same point in the same direction at the same time. The first car travels at a speed of 60 km/h, and the second car travels at a speed of 90 km/h. After how much time will they be 45 km apart from each other?
Show answer & explanation
Correct answer: D
Explanation
Given:
Speed of the first car = 60 km/h
Speed of the second car = 90 km/h
Difference in distance = 45 km
According to the formula:
Relative speed = 90 − 60
Relative speed = 30 km/h
Time = Distance / Relative speed = 45 / 30 = 1.5 hours