1)Two hundred people attended a dance recital. Adults tickets were $10.00 and children were $7.50. If the total revenue was $1850.00 how many adults and how many children attended?
2) Forty metres of fencing are available to enclose a rectangular garden. The area of the garden is given by the formula A= x(20-x) where x is the length of the garden.
a) What is the maximum area that can be enclosed??
b) What are the dimensions of the garden with maximum area?
If anyone knows how to do this please help, its much appreciated.