Insect spraying

In 600 ml of spraying is 5 ml of an active ingredient. How much is it per mile?

Correct answer:

p =  8.3333 ‰

Step-by-step explanation:

$$\begin{gathered} V_1=5\text{ ml } \\ {V}_2=600\text{ ml } \\ p=1000\cdot {\displaystyle \frac{V_1}{V_2}}=1000\cdot {\displaystyle \frac{5}{600}}={\displaystyle \frac{25}{3}}=8.3333\text{ ‰} \end{gathered}$$

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