1 [tex]\frac{3}{4}[/tex] gallons per gour
divide number of gallons used by running time
4 [tex]\frac{3}{8}[/tex]÷ 2 [tex]\frac{1}{2}[/tex]
change mixed numbers to improper fractions
[tex]\frac{35}{8}[/tex] ÷ [tex]\frac{5}{2}[/tex]
leave the first fraction, change division to multiplication, turn the second fraction upside down
= [tex]\frac{35}{8}[/tex] × [tex]\frac{2}{5}[/tex]
= ( 35 × 2 ) / (8 × 5 ) = [tex]\frac{7}{4}[/tex] = 1 [tex]\frac{3}{4}[/tex]
