At the city museum, child admission is $6.40 and adult admission is $9.70 . On Wednesday, twice as many adult tickets as child tickets were sold, for a total sales of $980.40 . How many child tickets were sold that day?
you start with [tex]980.40 \div 2[/tex] then you get 480.2 and divide it by the amount of a normal child ticket [tex]490.2 \div 6.40[/tex] then after that your final answer is 76.5 but you have to round it to 77 kids