A car travels 132 miles on 4 gallons of gas. At the same rate, how many gallons of gas
are needed to travel 231 miles?
To find out how many gallons of gas are needed to travel 231 miles at the same rate as traveling 132 miles on 4 gallons of gas, we can set up a proportion:
132 miles / 4 gallons = 231 miles / x gallons
Cross multiplying, we get:
132 * x = 4 * 231
132x = 924
x = 924 / 132
x = 7
Therefore, it would take 7 gallons of gas to travel 231 miles at the same rate.