Question

Mr. Curtis paid $48.51 for 12.6 gallons of gas. What is the price of one gallon of gas?

Answer 1

The price of one gallon of gas is `3.85`

Explanation:

Let, `x` be the price of 1 gallon of gas.

Here, ratio of the quantity of gas `=12.6:1`

Ratio of price of gas `=48.51:x`

The quantity of gas and its price are in direct proportion.

`:.` `12.6:1=48.51:x`

or, `12.6/1=48.51/x`

By cross multiplication, we have

`12.6*x=48.51`

or, `(12.6*x)/12.6=48.51/12.6rarr`Dividing both sides by 12.6

or, `x=3.85`