Answer:
Therefore, the car uses gas at a rate of 21 miles per gallon.
Explanation:
If Violet's car used 5/6 of a gallon to travel 17 1/2 miles, we can find the rate at which the car uses gas (in miles per gallon) by dividing the distance traveled by the amount of gas used.
To do this, we need to convert the mixed number 17 1/2 to an improper fraction:
17 1/2 = 35/2
So, the rate at which the car uses gas is:
(35/2) miles ÷ (5/6) gallons
To divide by a fraction, we can multiply by its reciprocal:
(35/2) miles ÷ (5/6) gallons = (35/2) miles x (6/5) gallons
Simplifying, we get:
(35/2) x (6/5) = (35 x 6)/(2 x 5) = 210/10 = 21
Therefore, the car uses gas at a rate of 21 miles per gallon.