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

Answer:

5/2 kg

Step-by-step 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.

Answer 2

Answer:

The answer is 1

c=the amount of compost and 10-c= the amount of potting soil.

Step-by-step explanation:

2/10=c/6-c

10c=2(6-c)

10c=12-2c

12c=12

C=1