2.5 hours
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We're given the speeds of both the car and the train, and we're asked to determine when they will be 525 km apart.
Let's use the formula:
Since time is the same for both the car and the train, we can add their speeds to get their relative speed with respect to each other.
The car travels at 95 km/h and the train at 115 km/h, so their combined speed is:
Now we need to find the time when they are 525 km apart:
So, the car and the train will be 525 kilometers apart after 2.5 hours.