# Insect spraying

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

Correct result:

p =  8.333

#### Solution:

$V_{1}=5 \ \text{ml} \ \\ V_{2}=600 \ \text{ml} \ \\ \ \\ p=1000 \cdot \ \dfrac{ V_{1} }{ V_{2} }=1000 \cdot \ \dfrac{ 5 }{ 600 }=\dfrac{ 25 }{ 3 }=8.333 \ ‰$

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