The admission fee at the Smithsonian Air & Space

Museum ​ is $1.50 for children and $4.00 for adults. On a

certain day, 2200 people enter the Smithsonian Air & Space

Museum, and $5050 is collected.

a. Write a system of equations to represent this situation.

a. Solve the system of equations to determine how many children and how many adults visited

the museum.