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15 cookies and brownies were sold. Each cookie was sold at $1.50 and each brownie was sold at $2.25. $ 26.25 was the total. How many cookies were sold? How many brownies were sold?

 Mar 13, 2020
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15 cookies and brownies were sold. Each cookie was sold at $1.50 and each brownie was sold at $2.25. $ 26.25 was the total. How many cookies were sold? How many brownies were sold?

 

15 Kekse und Brownies wurden verkauft. Jeder Cookie wurde zu 1,50 USD und jeder Brownie zu 2,25 USD verkauft. 26,25 $ war die Summe. Wie viele Cookies wurden verkauft? Wie viele Brownies wurden verkauft?

 

Hello Guest!

 

\(c+b=15\\ 1.5c+1.5b=22.5\\ \underline{$1.50\cdot c+$2.25\cdot b=$26.25}\\ 0.75b=3,75 \)

\(b=5\\ c=10\)

 

5 brownies and 10 cookies were sold.

laugh  !

 Mar 13, 2020
edited by asinus  Mar 13, 2020

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