SOLUTION: The enrolment in a school this year is 552.this is an increase of 15% over last year's enrolment.how many were enrolled last year?

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Question 530562: The enrolment in a school this year is 552.this is an increase of 15% over last year's enrolment.how many were enrolled last year?
Answer by oberobic(2304) About Me  (Show Source):
You can put this solution on YOUR website!
A 15% increase means the schools' current enrollment = 115% of last year's enrollment.
x = last year's enrollment
115% * x = 552
1.15*x = 552
x = 552/1.15
x = 480