At a concert, main floor seats sell for $25.00 and Upper Level seats sell for $12.00. There were 50,000 people in attendance and the concert total ticket sales is $1,112,000. How many main floor seats and upper level seats were sold?

MY SET UP:

Let m = main floor seats

Let u = upper floors seats

25m + 12u = 1,112,000

m + u = 50, 000

Is this correct?