Break time

Calculate how many percent of school time is spent on breaks. Calculate data for the whole week.

Correct answer:

p =  20.6349 %

Step-by-step explanation:

$$\begin{gathered} a=10+20+10+10+5+10=65\text{ min } \\ b=7\cdot 45=315\text{ min } \\ p=100\cdot {\displaystyle \frac{a}{b}}=100\cdot {\displaystyle \frac{65}{315}}={\displaystyle \frac{1300}{63}}\mathrm{\%}=20.6349\mathrm{\%} \end{gathered}$$

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