Solve each application below using systems. To receive full credit, you must 1) define all variables used,set up a system of 2 equations and 2 variables, 3) solve the system, and 4) write your solution aspart of a complete sentence using appropriate units of measure. A Christmas charity party sold tickets for $45 for adults and $25 for children. The total number oftickets sold was 320 and the total for the ticket sales was $13,000. How many adult and how manychildren's tickets were sold?