You fill your car with 15 gallons of gas at a cost of $45 using fractional notation how do you write a proportion that shows how much 5 gallons of gas will cost use x to represent the unknown cost

Question

You fill your car with 15 gallons of gas at a cost of $45 using fractional notation how do you write a proportion that shows how much 5 gallons of gas will cost use x to represent the unknown cost

Answer 1

Let x be the cost of 5 gallons of gas.

We can set up a proportion using the cost and amount of gas filled:

$45 / 15 gallons = x / 5 gallons

Now, you can solve for x by cross multiplying:

(15 * x) = (45 * 5)

15x = 225

Now, divide both sides by 15 to find the value of x:

x = 225 / 15
x = $15

Therefore, 5 gallons of gas will cost $15.