Question

the enrollment in a school this year is 552. this is an increase of 15% over last year enrollment. how many were they last year

Answer 1

Let the no. Of students last year be x

Therefore:-

15% of x + x = 552

( 15/100 × x ) + x = 552

3x/20 + x = 552

23x/20 = 552

23x = 11040

x = 11040/23

Thus, x = 480 students

Welcm :)