Answer:
12.11 gallons
Step-by-step explanation:
Ciara's car used gas on 160 mile road trip = [tex]7\frac{3}{4}[/tex] gallons
= [tex]\frac{31}{4}[/tex] gallons
Ciara's car used gas on 1 mile road trip = [tex]\frac{\frac{31}{4}}{160}[/tex]
= [tex]\frac{31}{4}\times \frac{1}{160}[/tex]
= [tex]\frac{31}{640}[/tex] gallons
Ciara expect to use on a 250 mile road trip = [tex]\frac{31}{640}\times 250[/tex]
= [tex]\frac{775}{64}[/tex]
= [tex]12\frac{7}{64}[/tex]
≈ 12.11 gallons
Ciara should expect to use [tex]12\frac{7}{64}[/tex] or 12.11 gallons of gas.
