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29 June, 15:59

Carmen spent a total of $19.50 at a concession stand on snacks for herself and her friends hamburgers cost $3.50 and hotdogs cost 225 if you bought a total of seven snacks how many hotdogs did she buy

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  1. 29 June, 19:48
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    Hb=3.5, hd=2.25, hb+hd=7,

    From the third, we can say hb=7-hd and we are told that:

    3.5hb+2.25hd=19.5 using hb found above in this equation gives you:

    3.5 (7-hd) + 2.25hd=19.5

    24.5-3.5hd+2.25hd=19.5

    -1.25hd=-5

    hd=4

    Carmen bought 4 hotdogs.
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