Let the total amount collected from selling the three types of tickets be x.
The ratio of the amounts collected from selling tier A, tier B, and tier C is 11:9:7, which means the amounts collected are 11x/27, 9x/27, 7x/27 respectively.
From the problem, we are given that the amount collected from selling tier B is $450000, so 9x/27 = $450000.
Multiplying both sides of the equation by 27/9, we get x = 27*$450000/9 = $<<27*450000/9=1350000>>1350000.
Therefore, the total amount of money collected from the sales of the three types of tickets is $1350000. Answer: \boxed{1350000}.
During a concert, three types of tickets, tier A , tier B , tier C were sold. The amounts collected from selling the three types of tickets were in the ratio 11:9:7 respectively. The amount collected from selling tier B was $450000. What was the total amount of money collected from the sales of the three types of tickets?
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