Question

There are a total of 420 students at South School. This is 3 times the number of students in the sixth grade. How many students, n, are there in the sixth grade?

Answer 1

Given:

• Total students: 420
• Given clue: 420 is 3 times the number of students in the sixth grade.

Let's reread the clue carefully.

{420} {is} {3 times the number of students in the sixth grade.}

↥ ↥ ↥

420 = 3 x n

This means that the equation formed is 420 = 3n. Let's solve for n.

Solving for n.

• 420 = 3n
• => 420/3 = 3n/3
• => 140 = n

140 students are in 6th grade.

Answer 2

140 students

Explanation:

Let n be the amount of students in 6th grade then:

3n=420

Divide both sides by 3

n=420/3

n=140

There are 140 students in the 6th grade.