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kozerog [31]
3 years ago
8

Elena's daughter sold 78 boxes of Girl Scout cookies. She was told that this amount represented 20% of the troops sale. How many

boxes did the room sell
Mathematics
1 answer:
Assoli18 [71]3 years ago
5 0
390.

If you use cross multiplication you'll get 20x=7800,
divide both sides by 20
and you have x=390
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