Question

A car uses 3 1/8 gallons of gasoline per hour when driving on the highway. How many gallons will it use after 4 2/3 hours? It will use _____________ gallons.

Answer 1

If the car uses 3 1/8 gallons per hour and the number of hours is 4 2/3, we can multiply both values to find the total amount of gallons used in this time.

First, we need to convert 3 1/8 and 4 2/3 into improper fractions:

`\begin{gathered} 4\text{ }(2)/(3)=4+(2)/(3)=(12)/(3)+(2)/(3)=(14)/(3)\\ \\ 3\text{ }(1)/(8)=3+(1)/(8)=(24)/(8)+(1)/(8)=(25)/(8) \end{gathered}`

Now, multiplying the values, we have:

`(25)/(8)\cdot(14)/(3)=(350)/(24)=14.58`

So the car will use 14.58 gallons.