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19.11.2020 •
Mathematics
Karmen purchased eight cookies and three chocolates for a total of $11.35. Marcus purchased three cookies and five chocolates for a total of $6.00. What is the price of one cookie and the price of one chocolate?
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Ответ:
cookie $1.25
chocolate $0.45
Step-by-step explanation:
x=cookie y=chocolate
8x+3y=11.35
3x+5y=6
40x+15y=56.75
9x+15y=18
40x-9x=56.75-18
x=1.25
y=0.45
Ответ:
wnqwlkbkwk;kw
Step-by-step explanation:
sqkq s/1lk2wn;2kk