Question

Gabrielle 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 10 Parts potting soil. He wants to end up with 12 kg of mix. How many kilograms of compost should Gabrielle use?

Answer 1

2 parts out of 12 are compost, 10 parts out of 12 are potting soil
(2/12) * 10 grams of compost should be used
((2/12)*10) grams * 1 kg/1000 grams = 0.0016 kgs