Question

at the movie theater, the jumbo - size popcorn bags decreased by 20%. if the old bags held 25 cups of popcorn, how much popcorn do the new bags hold? 80% is the same as 100% - 20%. you already know the value of 100%, so start by finding the value of 20% of 25 on the double number line. popcorn (cups) 0? 25 0% 20% 40% 60% 80% 100% 120%

Explanation:

Step1: Find 20% of 25

To find 20% of 25, we use the formula for percentage: $20\%$ of $25$ is $0.20\times25$. Calculating this, we get $0.20\times25 = 5$.

Step2: Find the new amount (80% of 25)

Since the new bags are 80% of the old bags (because 100% - 20% = 80%), we can also calculate it as $25 - 5$ (subtracting the 20% decrease from the original 25). Alternatively, using the percentage formula for 80%: $0.80\times25 = 20$.

Answer:

The new bags hold 20 cups of popcorn.