The chef 2

The chef in the restaurant used 19/20  cup of chocolate chips and 1 1/10 cups of cocoa powder for the cake. How much more cocoa powder did the chef use than the chocolate chips?

Correct answer:

x =  0.15

Step-by-step explanation:

$$\begin{gathered} c={\displaystyle \frac{19}{20}}=0.95 \\ p=1{\displaystyle \frac{1}{10}}=1+{\displaystyle \frac{1}{10}}={\displaystyle \frac{1\cdot 10+1}{10}}={\displaystyle \frac{11}{10}}=1.1 \\ x=p-c=1.1-0.95={\displaystyle \frac{3}{20}}=0.15 \end{gathered}$$

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