13. 100.38 ft
since 1 in = 25ft, (25x4), 4 inches = 100 ft. 3/8 = 37.5, which rounds up to 38%.
14. 25.2 mi
since 1 in = 5 miles, 5 inches = 25 miles.(5x5)
1/5 = 20%.
15. 3,420 sq ft.
since 1 in = 3 ft, for the length, doing 20x3 = length ; 60ft, and 19 x 3 = width ; 57ft. to find area, you have to multiply the length by the width. you multiply 20 by 19 to get your answer.
hope this helps !