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at a movie theather, each popcoen costs $4.50 and each colacoats $2.50. Mr.li took a bunch od kids to the moviea and purchased 15 items. he spent a total of $57.50. How many colas did Mr.li purchase?

Respuesta :

he purchased 10 each of the popcorn at $4.50 and 5 each of the colas at $2.50
10($4.50) + 5($2.50) = $45.00 + $12.50
=$57.50

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