Question

Which rate is equivalent to the unit rate of 15 miles per gallon?

thirty miles over three gallons
three gallons over thirty miles
four gallons over sixty miles
sixty miles over four gallons

Answer 1

Fourth option is correct.

Explanation:

Since we have given that

thirty miles over three gallons

Unit rate would be miles per gallon.

three gallons over thirty miles

Unit rate would be miles per gallon.

four gallons over sixty miles

Unit rate would be miles per gallon.

sixty miles over four gallons

Unit rate would be miles per gallon.

Hence, Fourth option is correct.

Answer 2

Sixty miles over four gallons would reduce down to 15 miles over one gallon which would 15 miles per gallon.