Answer :
Answer:
Step-by-step explanation:
A proportion could be used.
With 2 parts of compost and 6 parts potting soil, you would end up with 8 total parts.
So it can be written as a ratio of compost to total mix, or [tex]\frac{2}{8}[/tex]
The problem states 10 kg are needed in total, and the variable would be the amount of compost
As a ratio it would be [tex]\frac{x}{10}[/tex].
Use the ratios to write a proportion.
[tex]\frac{2}{8} = \frac{x}{10}[/tex]
Multiply both sides of the equation by 10
[tex]\frac{20}{8} = x[/tex]
Convert to a decimal if desired.
[tex]x=2.5[/tex]