Out of the original girls and boys at a carnival party 40% of the girls and 10% of the boys left early, 3/4 of them decided to hang out and enjoy the festivities. There were 18 more boys than girls in the party. How many girls were there to begin with?
If I have interpreted this question correctly, it describes an impossible situation.
If we represent the original number of girls as
and the original number of boys as
...BUT we are told