There are 30 students in a class, more
boys than girls. One night they all went
to the theatre.
In the first intermission every girl bought
a cheesecake, and every boy bought
a cake. (A cake and a coke each cost a whole
number of dollars.) In
the second intermission every girl bought
coke and every boy bought
a cheesecake.
The class spent $2 less in the second
intermission than in the first one. How
many boys and girls are there in this class
