On a number line from -6 to 14, a point between -6 and 14 will be selected at random. What is the probability that the point selected will be within 2 units of the point at coordinate 8?

I thought within 2 units meant that the point would be from 6 to 10, which are 5 points out of 20 points.

I got an answer of 1/4, but this is apparently wrong. The answer is supposed to be 1/5. I'm stuck here.