Problem
QUESTION 9 Use a proportion to solve the problem. Johnny's car will go 360 miles on 12 gallons of gasoline in highway driving. At this rate, how many gallons would be needed to travel 1579 miles on the highway? About 50 gal About 59 gal About 56 gal About 53 gal
Solution
Step 1 ：\(\frac{360\text{ miles}}{12\text{ gallons}} = \frac{1579\text{ miles}}{x\text{ gallons}}\)
Step 2 ：\(\frac{360}{12} = \frac{1579}{x}\)
Step 3 ：\(x \approx 52.63\text{ gallons}\)
Step 4 ：\text{Answer: About 53 gallons}\)
