Question

1100 students attend ridgewood junior high school. 5% of students bring their lunch to school every day. how many students brought their lunch to school on thursday? divide/scale down to solve for the missing percent. students 1100 5 100 percent

Explanation:

Step1: Understand the relationship

We know that 100% of students is 1100, and we need to find 5% of 1100. From the diagram, we can see the ratio between percent and students. So we can set up a proportion or use the scale factor. The scale factor from 100% to 5% is $\frac{5}{100}$.

Step2: Calculate the number of students

To find 5% of 1100, we can multiply 1100 by $\frac{5}{100}$. First, simplify $\frac{5}{100}=\frac{1}{20}$. Then $1100\times\frac{1}{20} = \frac{1100}{20}=55$. Or we can think of dividing 1100 by 100 (to get 1% of students) and then multiplying by 5. 1% of 1100 is $1100\div100 = 11$. Then 5% is $11\times5 = 55$.

Answer:

55