24 A cinema has 400 seats.
A film is shown at 5pm and at 7pm with two types of tickets available, adult and child.
At the 5pm showing of the film
The ratio of tickets sold to adults to tickets sold to children is 5:3
120 tickets are sold to children.
At the 7pm showing of the film
The number of adult tickets sold is 15% less than at 5pm
The number of child tickets sold is 10% more than at 5pm
Show that at the 7pm showing more than
of the seats are used.
-
-
