Question 813315
  <pre><font face = "Tohoma" size = 3 color = "indigo"><b> 
Hi,
ratio of boys to girls is 5:7
60 students, how many boys x
{{{(5/7) = x/(60-x)}}}   | Cross Multiplying to solve
   7x = 5(60-x)
   12x = 300
     x = 25 boys in the class
CHECKING our Answer***
 {{{5/7 = 25/35}}}