Answer:
274
Explanation:
First stop of Caroline = At 36 mile marker
Destination of Caroline = At 353 mile marker
Distance left to be covered = 353 - 36 = 317 miles
Given that Caroline decides to stop at an attraction
of the way after she stops for gas.
i.e. at a distance
of 317 miles away from the Gas stop.

So, Caroline stops at a point which is around 238 miles away from the gas station.
To calculate the Mile marker of her stop, we need to add the mile marker of gas station and the distance of her stop from gas station.
Mile marker location at her stop = 36+238 = 274