Question

Gabriel is making a mixture of compost and soil to use for a special plant. He wants his final mix to be 2 parts compost to 6 parts potting soil. He wants to end up with 10 kilograms of mix.

how many kilograms of compost should Gabriel use?
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Answer 1

5/2 kg

Explanation:

The ratio here is 2:6. 2 plus 6 is 8.

Then (2/8) times 10 kg represents the amount of compost needed; that comes to 20/8 kg, or 10/4 kg, or 5/2 kg.