SOLUTION: 5/7 of a group of students are girls .if the no.of girls is 18 more than the no.of boys .how many students are there altogether

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Question 1084644: 5/7 of a group of students are girls .if the no.of girls is 18 more than the no.of boys .how many students are there altogether
Answer by Edwin McCravy(20060)   (Show Source): You can put this solution on YOUR website!
5/7 of a group of students are girls .if the no.of girls is 18 more than the no.of boys .how many students are there altogether
Let the number of students =

5/7 of a group of students are girls .
That means that 5 sevenths are are girls and
the remaining 2 sevenths are boys 

So the number of girls = 5/7ths of n, or  

And the number of boys = 2/7ths of n, or

the no.of girls is 18 more than the no.of boys .
  

Multiply every term by 7

  

  

  

Edwin
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