simultaneous equations

Question

A musical was being performed. The adult ticket cost €7 and the child ticket cost €3. On the first night 299 tickets were sold and €1481 was made altogether . make 2 equations to express the numbers above . 

Answer 1

Let x = the number of adult tickets sold

Let y = the number of child tickets sold

x + y = 299

7x + 3y = 1481