SOLUTION: There were 741 children in the school hall. When 5/7 of the boys and 1/3 of the girls left the room, there were twice as many girls as boys remaining in the room. How many girls we

Algebra ->  Percentage-and-ratio-word-problems -> SOLUTION: There were 741 children in the school hall. When 5/7 of the boys and 1/3 of the girls left the room, there were twice as many girls as boys remaining in the room. How many girls we      Log On


   

Question 1108524: There were 741 children in the school hall. When 5/7 of the boys and 1/3 of the girls left the room, there were twice as many girls as boys remaining in the room. How many girls were in the room at first?
Answer by ikleyn(52852) About Me  (Show Source):
You can put this solution on YOUR website!
.
B + G = 741,     (1)   (B stands for boys; G stands for girls)

%282%2F7%29B = %282%2F3%29%2AG    (2)   (counting the remaining kids)


The setup is just completed.

The rest is just technique.