Questions: 3) A movie theater put 8 cups of oil for every 9 batches of popcorn they made. After they had made 63 batches of popcorn, how much oil would they popcorn have used?
Transcript text: 3) A movie theater put 8 cups of oil for every 9 batches of popcorn they made. After they had made 63 batches of popcorn, how much oil would they popcorn have used?
Solution
Solution Steps
Step 1: Identify the given ratio
The problem states that the movie theater uses 8 cups of oil for every 9 batches of popcorn.
Step 2: Determine the total number of batches
The problem states that the theater made 63 batches of popcorn.
Step 3: Set up the proportion
We need to find out how much oil is used for 63 batches. We can set up the proportion as follows:
\[
\frac{8 \text{ cups of oil}}{9 \text{ batches}} = \frac{x \text{ cups of oil}}{63 \text{ batches}}
\]
Step 4: Solve for x
Cross-multiply to solve for \( x \):
\[
8 \times 63 = 9 \times x
\]
\[
504 = 9x
\]
\[
x = \frac{504}{9}
\]
\[
x = 56
\]