Question 979513
Simple approach: He is 5 miles behind and gaining a 1 mile per hour.  It will take 5 hours.

Complex approach:
Jordan is at point 0, Steve at point 5.

Steve's distance needs to equal Jordan's distance.
Steve is 5+6mph*x hours or 5+6x.
Jordan's distance is 7mph or 7x.  The x works because they will be riding for the same time.

5+6x=7x
5=x
In 5 hours, Steve will travel 30 miles, and he will be 35 miles away from point 0.
In 5 hours, Jordan will travel 35 miles.