In the Hillside summer camp there are 100 children. 90% of the children are boys and the rest are girls. The camp administrator decided to make the number of girls only 5% of the total number of children in the camp. How many more boys must she bring to make that happen?	Choose the correct choice from the following answers:  A) 150.  B) 145.  C) 100.  D) 30.  E) 25.
Given there are 100 students , 90% of 50 = 90 boys and remaining 10 girls.   Now here 90% are Boys and 10% are Girls.   Now question is asking about how many boys do we need to add, to make the girls percentage to 5 or 5%..   If we add 1000 to existing 90 then the count will be 190 and the girls number will be 10 as it.   Now boys are 95% and girls are 5%. ( out of 200 students = 190 boys + 10 girls ).   IMO option 100. is correct.
<result>C</result>
In the Hillside summer camp there are 100 children. 90% of the children are boys and the rest are girls. The camp administrator decided to make the number of girls only 5% of the total number of children in the camp. How many more boys must she bring to make that happen?