Use a system of equations to solve the following problem
The local theater has three types of seats for Broadway plays: main , , and mezzanineMain floor tickets are $44 balcony tickets are $38, and mezzanine tickets are $36. One particular night, sales totaled $47,456There were 43 more main floor tickets sold than balcony and mezzanine tickets combined. The number of balcony tickets sold is 270 more than 2 times the number of mezzanine tickets soldHow many of each type of ticket were sold?
Let number of main floor, balcony, and mezzanine tickets be M, B, and E, respectively
Then we get the following: M = B + E + 43 -- eq (i)
Also, B = 2E + 270 ---- eq (ii)
And, we get revenue equation as: 44M + 38B + 36E = 47,456 ------ eq (iii)
M = (2E + 270) + E + 43 ----- Substituting 2E + 270 for B in eq (i)
M = 3E + 313 ====> M - 3E = 313 ----- eq (iv)
4M + 38(2E + 270) + 36E = 47,456 ----- Substituting 2E + 270 for B in eq (iii)
44M + 76E + 38(270) + 36E = 47,456
44M + 112E = 37,196
4(11M + 28E) = 4(9,299)
11M + 28E = 9,299 ---- eq (v)
11M - 33E = 3,443----- Multiplying eq (iv) by 11 ---- eq (vi)
61E = 5,856 ---- Subtracting eq (vi) from eq (v)
Number of mezzanine tickets sold, or
With E known, you can compute the ticket-types below.
Number of balcony tickets sold: 2E + 270.
Number of main floor tickets sold: 3E + 313.