If you divide 20 acres into 1/4 sections you'll get
20 ÷ 1/4 sections. When you divide fractions, you just multiply the reciprocal.
20 ÷ 1/4 =
20 × 4/1 = 80 sections
Ok so,
20*2= 40
20*1/2=10
40+10=50
So Johncan travel 50 km in 2 1/2 hours.
Hope this helps :)
37 1/2 +10 1/2 = 48 inches
48 inches is your answer ;)