SOLUTION: This year, 2250 students registered at Golden State College, an increase of 12.5% over last year. How many students registered at Golden State College last year?

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Question 1182276: This year, 2250 students registered at Golden State College, an increase of 12.5% over last year. How many students registered at Golden State College last year?
Found 2 solutions by mananth, ikleyn:
Answer by mananth(16946)   (Show Source): You can put this solution on YOUR website!
This year, 2250 students registered at Golden State College,
an increase of 12.5% over last year.
If this year there are 112.5 students last year there were 100
this year it was 2250 students there were x students last year
112.5/2250 =100/x
x= 2250*100/112.5
x=2000 students last year


How many students registered at Golden State College last year?
Answer by ikleyn(52767)   (Show Source): You can put this solution on YOUR website!
.

            The  "solution"  by  @mananth, as it is written in his post, is a  GIBBERISH  in its purest form.

            I came to bring a standard correct Algebra solution and set out it   as it  SHOULD  BE  done. 


Let x be the number of students registered last year (the unknown value).


Then the number of students registered this year is  

    x + 0.125x = x*(1+0.125) = 1.125x,

according to the condition.


Thus you have this equation


    1.125x = 2250.


Divide both sides by 1.125 and get the ANSWER


    x =  = 2000.

Solved and carefully explained.

Ignore the post by @mananth, for your safety and for the peace in your mind.



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