# A car passes a landmark traveling at a constant rate of 45 km/h. 2 hours later, a second car passes the same landmark traveling in the same direction at 70 km/h. How much time after the second car passes the landmark will it overtake the first car?

##### 1 Answer

Feb 6, 2017

#### Explanation:

The key to this problem is realising that at the point where the second car overtakes the first, they will BOTH be the SAME distance from the landmark.

We can write that distance in two different ways - one for each car.

Let the time for the first car to be overtaken be

The time for the second car to reach the the first is 2 hours less than the first car. Time =

But