Natalie's car used 7 gallons of gas to drive 161 miles. At what rate does her car use gas in gallons per mile? Express your answer in simplest form.
7 gallons / 161 miles = x gallons / 1 mile
7 / 161 = x / 1
7 / 7 ∙ 23 = x
1 / 23 = x
x = 1 / 23 gallons / mile
Note that your solution doesn't give the right units. 1/23 is 1 mile/23 gallons or 0.0435 miles/gallon. You want ? gallons/mile which is 23/1 or 23 miles/gallon.
David drove 366 miles in 10 hours. On average, how fast did he drive in miles per hour? Express your answer in simplest form.
Natalie's car used 7 gallons of gas to drive 161 miles. At what rate does her car use gas in gallons per mile? Express your answer in simplest form.
Aaron earned $74 at his job when he worked for 4 hours. What was his hourly pay rate in dollars per hour? Express your answer in simplest form.
To find the rate at which Natalie's car uses gas in gallons per mile, we need to divide the number of gallons used by the number of miles driven.
In this case, Natalie's car used 7 gallons of gas to drive 161 miles. So we divide 7 by 161:
7 gallons / 161 miles = 0.0435 gallons per mile.
To express the answer in simplest form, we can round it to two decimal places:
0.0435 gallons per mile ≈ 0.04 gallons per mile.
Therefore, the rate at which Natalie's car uses gas is approximately 0.04 gallons per mile.