SOLUTION: If there were 77 kids in the whole class and 7:4 is the ratio of girls to boys how many girls would there be and how would you find out

Algebra ->  Percentage-and-ratio-word-problems -> SOLUTION: If there were 77 kids in the whole class and 7:4 is the ratio of girls to boys how many girls would there be and how would you find out       Log On


   

Question 938817: If there were 77 kids in the whole class and 7:4 is the ratio of girls to boys how many girls would there be and how would you find out
Answer by ewatrrr(24785) About Me  (Show Source):
You can put this solution on YOUR website!
 

Hi

ratio of girls to boys is 7:4

Let x represent the constant of proportionality

7x + 4x = 77

11x = 77

x = 7

...

49G, 28B

...

checking:

sum = 77