Question

If 5 liters cost $2.50, then how much would it cost for 9 liters?

Answer 1

5:$2.50

9:?

divide 5 by both sides cause you wanna see how much is 1 liter so you can multiply that with 9.

5 divided by 5 is 1.

$2.50 divided by 5 is $0.50

1:$0.50

each liter costs  $0.50

Multiply $0.50 with 9 and that is $4.50

the answer is $4.50

Answer 2

Answer:

$4.50

Step-by-step explanation:

To solve a problem like this one, we can use the simple ratio method to find the cost for 9 liters, here in this case.

We know that, 5 liters (of something) cost $2.50. So to find the cost for 9 liters, we can assume its cost to be x and can write it as:

$\frac{5 liters}{9 liters} = \frac{2.50}{x}$

Now solving for x to get:

$x = \frac{2.50*9}{5}$

$x=4.5$

Therefore, 9 liters would cost $4.50.