Question

Gasoline at a particular gas station costs $2.78 per gallon. If Cory buys $18 of gas, how many gallons did he buy?

Answer 1

Cory bought 6.474 gallons of gasolline.

Explanation:

The total cost of gasoline (
`C`), measured in dollars, is given by the following expression:

`C = n\cdot c`

Where:

`n` - Amount of gasoline, measured in gallons.

`c` - Unit cost, measured in dollars per gallon.

Given that
`C = \$\,18` and
`c = \$\,2.78\,(1)/(gal)`, the amount of gasoline is cleared and calculated:

`n = (C)/(c)`

`n = (\$\,18)/(\$\,2.78\,(1)/(gal) )`

`n = 6.474\,gal`

Cory bought 6.474 gallons of gasolline.