If it takes 2 cups of cocoa to make 9 brownies how many cups does it to take to make 81 brownies?
If it takes 2 cups of cocoa to make 9 brownies, we can set up a ratio to find out how many cups it takes to make 81 brownies.
2 cups cocoa/9 brownies = x cups cocoa/81 brownies
Cross multiplying, we get:
9x = 2 * 81
9x = 162
Dividing both sides by 9, we get:
x = 162/9
x = 18
Therefore, it takes 18 cups of cocoa to make 81 brownies.
To find out how many cups of cocoa it takes to make 81 brownies, we can set up a proportion using the given information.
We are told that it takes 2 cups of cocoa to make 9 brownies.
Let's assign variables like this:
Let "x" be the number of cups of cocoa needed to make 81 brownies.
Now, we can set up a proportion:
2 cups of cocoa / 9 brownies = x cups of cocoa / 81 brownies.
To solve for "x", we can cross-multiply and then divide:
2 * 81 = 9 * x.
162 = 9 * x.
To isolate "x", we divide both sides by 9:
162 / 9 = x.
Therefore, x = 18.
So, it would take 18 cups of cocoa to make 81 brownies.
To find out how many cups of cocoa is needed to make 81 brownies, we can set up a proportion using the ratio of cocoa to brownies.
Let's represent the number of cups of cocoa needed as "x".
The proportion can be set up as:
2 cups cocoa / 9 brownies = x cups cocoa / 81 brownies
Using cross-multiplication, we can solve for x:
(2 cups cocoa) * (81 brownies) = (9 brownies) * (x cups cocoa)
162 cups cocoa = 9x
Dividing both sides of the equation by 9:
162 cups cocoa / 9 = 9x / 9
18 cups cocoa = x
Therefore, it would take 18 cups of cocoa to make 81 brownies.