At the city museum, child admission is $6.00 and adult admission is $9.70. 166 tickets were sold for a total sales of $1351.20. How many child tickets were sold that day?
+36915 c = child tix revenue from = $ 6 c
a = adult tix = 166-c revenue from = $ 9.70(166-c) Summed, the two revenues total 1351,20
6 c + 9.7 (166-c ) = 1351.20 solve for 'c' the number of chlid tix
