Question

The number of blueberry muffins that a baker makes each day is 40% of the total number of muffins she makes.

Part A

On Monday, the baker makes 36 blueberry muffins.

What is the total number of muffins that the baker makes on Monday?

Part B

On Tuesday, the baker makes a total of 60 muffins.

How many blueberry muffins does the baker make on Tuesday?

Answer 1

Part A: 90; Part B: 24.

Explanation:

The number of blueberry muffins is 40% of the total number of muffins.

Part A: There are 36 blueberry muffins. This is 40% of the unknown number of muffins, x; this gives us

36 = 0.4x

Divide both sides by 0.4:

36/0.4 = 0.4x/0.4

90 = x

There were 90 total muffins.

Part B: 40% of the total number of muffins, 60, gives us the unknown number of blueberry muffins:

0.4(60) = x

24 = x

There were 24 blueberry muffins.