Child admission is 5.50 and adult admission is 8.80, twice as many adult tickets as child tickets were sold, for a total of 669.90 how many child tickets were sold that day?

The answer to your question is: 29 tickets for children and 58 tickets for men.

Step-by-step explanation:

Child = c = $ 5.50

Adult = a = $8.80

Equation

                                  a = 2c

                           5.5c + 8.8a = 669.9

                           5.5c + 8.8(2c) = 669.9

                           5.5c + 17.6c = 669.9

                           23.1c = 669.9

                           c = 669.9 / 23.1

                          c = 29

                           a = 2(29)

                          a = 58

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step-by-step explanation: