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Initially 40% percent of the students at the school dance are freshman. Then 15 more freshman arrive,after which 52% are freshman.How many students are now at the dance after the freshman arrive?

 
 Jan 23, 2023
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Let the number of students = S

 

52%  -  40% = 12 % percentage rise as a reult of arrival of 15 freshmen.

 

12%S = 15

 

0.12S = 15

 

S=15 / 0.12 =125 - number of students at the dance after the arrival of 15 freshmen. 

 
 Jan 23, 2023

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