Bella bought b boxes of cookies to bring to a party. She decides to keep two boxes. Each box contains 18 cookies. She brings 90 cookies to the party. Which equation can be used to find the number of boxes, b, Bella bought? How many boxes did she buy?
The equation that can be used to find the number of boxes, b, Bella bought is:
b - 2 = 90 / 18
Simplifying the equation:
b - 2 = 5
Adding 2 to both sides:
b = 7
Therefore, Bella bought 7 boxes of cookies.
To find the number of boxes, b, that Bella bought, you can use the equation:
b = (90 - 2) / 18
Simplifying this equation, we get:
b = 88 / 18
Now, let's calculate the value of b:
b = 4.88
Since you can't have a fraction of a box, Bella must have bought 5 boxes of cookies.
To find the number of boxes, b, Bella bought, we can set up an equation. Let's break down the problem:
Bella bought b boxes of cookies.
Then she decides to keep two boxes, so she brings (b - 2) boxes to the party.
Each box contains 18 cookies, so she brings a total of 18 * (b - 2) cookies to the party.
We are given that she brings 90 cookies to the party.
The equation we can use to find the number of boxes, b, is:
18 * (b - 2) = 90
To solve this equation, we can simplify it:
18b - 36 = 90
Adding 36 to both sides:
18b = 126
Dividing both sides by 18:
b = 7
Therefore, Bella bought 7 boxes of cookies.