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


V1=5 ml V2=600 ml  p=1000 V1V2=1000 5600=253=8.333 ‰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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