There are 540 sixth grade students in the experimental primary school. The number of sixth grade students is one fourth of the total number of students in the school. How many students are there in the experimental primary school

There are 540 sixth grade students in the experimental primary school. The number of sixth grade students is one fourth of the total number of students in the school. How many students are there in the experimental primary school

540 × 4 = 2160 (person)