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RSM was founded in 1996. From 1996 to 1997, the number of students in RSM doubled. From 1997 to 1998 the number of students doubled again.By what percent did the number of students increase from 1997 to 1998?

 

I keep getting a wrong answer.

 Feb 15, 2021
 #1
avatar+120129 
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Let the initial  number of  students  = N

Then in 1997  there  were  2N

And in 1998  there were    2(2N)   =  4N

 

% increase   =   [ Number in 1998  - Number in 1997  ]  / [ Number in 1997  ]   x  100%

 

So

 

[ 4N  - 2N ]  / [ 2N ]       x 100%  =

 

2N  / 2N  x   100%   = 

 

1   x  100%   =

 

100%  increase

 

 

cool cool cool

 Feb 15, 2021

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