Question

Read the problem.

40% of the desserts at a bake sale are cookies. If 120 of the desserts are cookies, how
many desserts are at the bake sale in all?
Pick the model that represents the problem.
How many desserts are at the bake sale in all?

Answer 1

300

Explanation:

The total number of desserts is x. we don't know what it is.

40% of all the desserts are cookies.

That is 40% of x.

We are told that 120 of the desserts are cookies.

That means that 40% of all desserts amount to 120.

40% of x = 120

0.4x = 120

Divide both sides by 0.4

0.4x/0.4 = 120/0.4

x = 300

Answer: In all there are 300 desserts.

Answer 2

300

Explanation:

120÷40=3

3×100=300

dividing 120 by 4 will get you 1% so then to find 100% you multiple by 100