Question

Greg combined different weights of fertilizer, soil, and compost to make 29 kilograms (kg) of potting soil for some plants. The weight of fertilizer was x kg. The weight of soil was 2 kg more than three times the weight of fertilizer, and the weight of compost was half the weight of fertilizer. This is represented in the equation below.
x + (3x + 2) + 1/2 x = 29
What was the difference in the weights of soil and compost Greg combined?

3 kg

6 kg

14 kg

17 kg