SOLUTION: ¾ of a class are girls. 5 class members are boys. How many children are there in the class?

Algebra ->  Percentage-and-ratio-word-problems -> SOLUTION: ¾ of a class are girls. 5 class members are boys. How many children are there in the class?      Log On


   

Question 798307: ¾ of a class are girls. 5 class members are boys. How many children are there in the class?
Found 2 solutions by richwmiller, harpazo:
Answer by richwmiller(17219) About Me  (Show Source):
You can put this solution on YOUR website!
3/4 c=g
(1-3/4)c=b
1/4c=b
1/4c=5
c=20 children in the class

Answer by harpazo(655) About Me  (Show Source):
You can put this solution on YOUR website!

Let the total number of children in the class = x
Therefore,
(3/4)x + 5 = x
x - (3/4)x = 5
(1/4)x = 5
x = 5 * 4
x = 20
Total number of children in the class is 20.