Going to the Movies
A special matinee of a magic show costs $4 for adults and $1 for children under 10. If twice as many children attended as adults and the show received a total of $72, how many adults attended? If twice as many adults attended as children and the show received a total of $72, how many adults attended? Justify your reasoning.
(Source: Mathematics Teaching in the Middle School, Apr 1994)
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