Zailene

Zailene wants to make two kinds of kakanin, puto and kutsina. Puto recipe needs 3 2/5 cup of flour while Kutsinta needs 5 ¼ cup of flour. How many cups of flour will Zailene be needed in all?

Correct answer:

x =  8.65

Step-by-step explanation:

$$\begin{gathered} p=3{\displaystyle \frac{2}{5}}=3+{\displaystyle \frac{2}{5}}={\displaystyle \frac{3\cdot 5+2}{5}}={\displaystyle \frac{17}{5}}=3.4 \\ k=5{\displaystyle \frac{1}{4}}=5+{\displaystyle \frac{1}{4}}={\displaystyle \frac{5\cdot 4+1}{4}}={\displaystyle \frac{21}{4}}=5.25 \\ x=p+k=3.4+5.25={\displaystyle \frac{173}{20}}=8\frac{13}{20}=8.65 \end{gathered}$$

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