Question

Marco needs to buy premium gasoline for his car. he has $20 in his wallet . write and solve an inequality to determine how many many gallons of gas marco can buy

Answer 1

(price of premium gasoline)g
`\leq` $20

Answer 2

`2.25g\leq 20`

`g\leq 8.888`

Explanation:

Please consider the attached file for gasoline prices.

Let g represent number of premium gasoline gallons.

Since each gallon of premium gasoline costs $2.25. so cost of g gallons would be
`2.25g`.

We have been given that Marco has $20 in his wallet. To find the gallons of premium gas Marco can buy, we need to write an inequality where cost of g gallons should be less than or equal to $20 as:

`2.25g\leq 20`

Therefore, our required inequality would be
`2.25g\leq 20`.

Now, we will divide both sides by 2.25 as:

`(2.25g)/(2.25)\leq (20)/(2.25)`

`g\leq 8.888`

Therefore, Marco can buy 8.88 gallons or less gallons of premium gasoline.