You're supposed to write the number on where the line stops. So for example, thr first one goes by 5, 10, 15, 20 and in between there's 4 lines so the lines between 10 and 15 would be 10, 11, 12, 13, 14, 15 and the line stops at the 2nd line so the number would be 12. So the answer is 12 mi
