Production 60701

The enamel for the production of bottles contains defects. The average number of caries is 15 per 100 kg. The bottle weighs 1 kg. What is the proportion of defective bottles?

Correct answer:

p =  15 %

Step-by-step explanation:

$$\begin{gathered} m_1=1\text{kg} \\ m=100\text{kg} \\ {p}_0=15\cdot \frac{m_1}{m}=15\cdot \frac{1}{100}=\frac{15\cdot 1}{100}=\frac{15}{100}=\frac{3}{20}=0.15 \\ p=p_0\cdot 100=\frac{3}{20}\cdot 100=\frac{3\cdot 100}{20}=\frac{300}{20}=15\% \end{gathered}$$

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