Question

Suppose 45% of the graduating class in a certain high school goes on to college. If 270 students from this graduation class are going on to college, how many students are from this graduating class?

Answer 1

600 students are from this graduating class.

Explanation:

Set up an equation:

Variable x = total number of students

45/100 = 270/x

Cross multiply:

45 × x = 100 × 270

45x = 27,000

x = 600