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juan is preparing many gifts for a family holiday party. each gift must either be
wrapped with wrapping paper or prepared in a gift bag. juan can wrap a single gift in
6.5 minutes and he can do a giftbag in 3 minutes. juan prepared a total 19 gifts in
74.5 minutes. write a system of equations that could be used to determine the
number of gifts juan wrapped and the number of giftbags he prepared. define the
variables that you use to write the system.