John and James walk from point x to point z (shown in the figure above). John walks directly from x to y on Path a and then directly from y to z on Path b. James walks directly from x to z on Path c. If Path a is 13 miles long and Path b is 5 miles long, John walks about how many miles longer than James?

1. 2
2. 3
3. 4
4. 5
5. 6

Transcribed Image Text:

Path a Path c Path b