Question

of the students in a school are in sixth grade.
How many students are in the school if 42 of them are sixth graders?
189

Answer 1

To find the total number of students in the school, you can set up a proportion based on the information given. Let's denote the total number of students in the school as "x" and the number of sixth graders as 42. Since 30% of the students are in sixth grade, we can write the proportion: \[ \frac{42}{x} = \frac{30}{100} \] Solving for x: \[ 42 \times 100 = 30x \] \[ 4200 = 30x \] \[ x = \frac{4200}{30} \] \[ x = 140 \] Therefore, there are 140 students in the school.