Using a system of equation, the Number of tickets sold at $27 is - 380615
Let :
a + b = 6000 - - - - (1)
27a + 40b = 5188000 - - - - - (2)
From (1) :
Put (3) in (2)
27a + 40(6000 - a) = 5188000
27a + 240000 - 40a = 5188000
-13a = 5188000 - 240000
-13a = 4948000
a = -380615
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