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?
Responses
18b−2=90; b=5
18b−2=90; b=5
2b−18=90; b=54
2b−18=90; b=54
18b−36=90; b=7
18b−36=90; b=7
18b−36=90; b=6
The correct equation that can be used to find the number of boxes, b, Bella bought is 18b - 2 = 90.
To solve the equation, you would add 2 to both sides to isolate the 18b term:
18b - 2 + 2 = 90 + 2
Simplifying, you get:
18b = 92
Finally, divide both sides by 18 to solve for b:
b = 5
Therefore, Bella bought 5 boxes of cookies.
To find the number of boxes, b, Bella bought, we can set up an equation based on the information given.
Each box contains 18 cookies, and she decided to keep two boxes for herself. So, the number of cookies she brings to the party is (18 * 2) = 36.
We are told that she brings 90 cookies to the party. Therefore, the number of boxes Bella bought can be represented by the equation: 18b - 36 = 90.
Now, let's solve the equation to find the value of b.
Adding 36 to both sides of the equation, we have: 18b = 90 + 36.
Simplifying the right-hand side, we get: 18b = 126.
To isolate b, we divide both sides of the equation by 18: b = 126 / 18.
Simplifying further, we find that b = 7.
Therefore, Bella bought 7 boxes of cookies.
So, the correct equation is 18b - 36 = 90, and she bought 7 boxes.
The correct equation that can be used to find the number of boxes, b, Bella bought is 18b - 2 = 90.
To solve this equation, we can add 2 to both sides to isolate the variable:
18b - 2 + 2 = 90 + 2
18b = 92
Then we divide both sides by 18 to solve for b:
(18b)/18 = 92/18
b = 5
Therefore, Bella bought 5 boxes of cookies.