Question

When Bobby goes to work he dries at an average of 45 mph it takes about 1.25 hours for him to get to work if it cost $2.89 per gallon how much money does bobby spend on gas to get to work 25 miles per gallon.

Answer 1

Solution: 6.5025 dollars.

Analysis:

We have a speed of Bobby, and the time he used to go to work. With these values, we can find the distance in miles:

`\begin{gathered} Distance=Speed\ast Time \\ Distance=45(miles)/(hour)\ast1.25hour \\ Distance=56.25\text{ }miles \end{gathered}`

If we know the distance and how many miles travel per gallon, we can find how many gallons need Bobby to go to work:

`\begin{gathered} Amount\text{ }of\text{ }gallons=\frac{Distance}{Relationship\text{ }milespergallon} \\ \\ Amount\text{ }of\text{ }gallons=(56.25miles)/(25(miles)/(gallon)) \\ \\ Amount\text{ of }gallons=2.25\text{ }gallons \end{gathered}`

After we find the amount of gallons used, we can fin how much many money does Bobby spend:

`\begin{gathered} Money=Gallons\ast Cost\text{ }per\text{ }gallon \\ Money=2.25\ast2.89 \\ Money=6.5025\text{ }dollars \end{gathered}`