SOLUTION: During last year the number of students in a school increased by 100%. This year, the number of students increased by 150%. WHat percent of the number of students now was the numbe

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Question 1015126: During last year the number of students in a school increased by 100%. This year, the number of students increased by 150%. WHat percent of the number of students now was the number of student two years ago?
Answer by Boreal(15235) About Me  (Show Source):
You can put this solution on YOUR website!
year 1=x
year 2=2x
increase is x/x=100%
year 3 is 5x
increase is 3x
Another way to get year 3 is to multiply year 2 by 1.5
original amount is 2x (the original amount is the most recent year)
Dividing, one gets 1.5 or 150%.
It is 5 times as much as 2 years before.