Question

all students in ridgewood junior high school either get their lunch in the school cafeteria or brought it from home on tuesday. 20% of students brought their lunch. 34 students brought their lunch. how many students in total are in ridgewood junior high school? multiply/scale up to solve. students 34 20 100 percent answer attempt 1 out of 2

Explanation:

Step1: Understand the relationship

We know that 20% of the total students is 34. Let the total number of students be \( x \). So we can write the equation \( 0.2x = 34 \) (or using the scale - up method, since 20% corresponds to 34, we can find what 100% corresponds to).

Step2: Scale up

To find the total number of students (100%), we first find out how much 1% is. Since 20% is 34, then 1% is \( \frac{34}{20} \). Then 100% (total number of students) is \( \frac{34}{20}\times100 \).
Simplify \( \frac{34}{20}\times100=34\times5 = 170 \).

Answer:

170