Final answer:
To estimate the size of the crowd standing along a 1.5-mile section of a parade route, we can use the given ratio of 12 people in 25 square feet. Multiply the width (30 feet) by the length (7920 feet) and divide by the ratio to find the estimated number of people in the crowd. The estimated size of the crowd is approximately 59,400 people.
Step-by-step explanation:
To estimate the size of the crowd standing along a 1.5-mile section of a parade route, we can use the given ratio of 12 people in 25 square feet. First, convert the 1.5-mile section into feet by multiplying it by 5280 (the number of feet in a mile). This gives us 7920 feet. Since the crowd is 15 feet deep on both sides of the street, the total width of the crowd is 30 feet.
Now, let's use the given ratio to estimate the number of people per square foot. We have 12 people in 25 square feet, so the ratio of people to square feet is 12/25.
Next, multiply the width (30 feet) by the length (7920 feet) and divide by the ratio to find the estimated number of people in the crowd.
Estimated number of people = (width * length) / ratio = (30 * 7920) / (12/25) = 59400
Therefore, the estimated size of the crowd is approximately 59,400 people.