Question 469597
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Hi,
Need more information: either total number tickets sold or the 
proportion each sold, for ex

24 ticket sold
Let x and (24-x) represent the number of $5.50 and $2 tickets sold
Question states***
  5.50x + 2(24-x) = 83
Solving for x
    3.50x = 35
        x = 10, number of $5.50 tickets sold and...
           There were 14 $2 tickets sold by Ron  (24-10)

CHECKING our Answer***
  $5.50*10 + $2*14 = $55 + $28 = $83