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Andrej [43]
3 years ago
14

Carmen spent a total of $19.50 at a concession stand on snacks for herself and her friends hamburgers cost $3.50 and hotdogs cos

t 225 if you bought a total of seven snacks how many hotdogs did she buy
Mathematics
1 answer:
Svetllana [295]3 years ago
3 0
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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