A package of 2 paintbrushes is on sale for 2.40. How much will 3 packages cost?

3.60

Step-by-step explanation:

2.40 divided by 2 is 1.20

1.20 times 3 is 3.60

To find the unit price of each paintbrush, we simply divide 2.4 by 2 to find how much each individual paintbrush package costs.

2.4/2 = 1.2

Now, we can add 1.2 to 2.4 to find the price of 3 paintbrush packages.

1.2 + 2.4 = 3.6 (This is your answer.)