AgentPangolin
28.10.2019 •
Mathematics
You and your friend make a lemonade stand. you spend $55 in materials to build the stand. after buying lemonade mix, you determine it costs $0.13 to make each cup of lemonade. you and your friend charge $0.50 per cup of lemonade. how many cups do you need to sell to make back your expenses? ***only need equation***
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Ответ:
Ответ:
rate 1 / rate 2 = sq root (30 / 12)
rate 1 / rate 2 = sq root (2.5)
rate 1 / rate 2 = 1.5811388301
Source:
http://www.1728.org/graham.htm