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OLEGan [10]
3 years ago
9

Alyssa wants to know the gas mileage of her new car. She kept track of the number of miles she traveled and the number of gallon

s she used. Which method and reasoning can Alyssa use to calculate the gas mileage in miles per gallon?
Miles Traveled : 243.8
Gallons Used : 7.71

A. 243.8 miles × 7.71 gallons
because multiplying a quantity with units of miles by a quantity with units of gallons gives a quantity with units of miles per gallon.

B. 243.8 miles - 7.71 gallons
because subtracting a quantity with units of gallons from a quantity with units of miles gives a quantity with units of miles per gallon.

C. 7.71 gallons ÷ 243.8 miles
because dividing a quantity with units of gallons by a quantity with units of miles gives a quantity with units of miles per gallon.

D. 243.8 miles ÷ 7.71 gallons
because dividing a quantity with units of miles by a quantity with units of gallons gives a quantity with units of miles per gallon.
Mathematics
1 answer:
Anna [14]3 years ago
3 0

Answer:

D


Step-by-step explanation:

Since Alyssa wants to know her gas mileage, which is MILES PER GALLON, she will need to divide total miles by total gallons.

"per gallon" means per 1 unit of gallon, which we will get ONLY IF WE DIVIDE by TOTAL NUMBER OF GALLONS, hence we get "per unit of gallon".

<u>So we need to divide 243.8 miles by 7.71 gallons to get Alyssa's gas mileage.</u>

Answer choice D is right.

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