Question

On a recent 160 mile road trip. Clara's car used

7and 3/4 gallons of gas. How many gallons should
she expect to use on a 250 mile road trip?

Answer 1

12 gallons

Explanation:

we can set up a ratio of gas/miles equals gas/miles

7 3/4 can be rewritten as 7.75

let 'g' = # gallons used for 250 miles

7.75/160 = g/250 After cross-multiplying you get:

1937.5 = 160g

divide each side by 160 to get value of 'g':

g = 12.11 to nearest hundredth