In the example, multiplying $6 by 25 percent gives a weighted-average CMU of $1.50 for Product A. Step 4. Add the weighted-average CMUs of each product together to give the total weighted-average contribution margin or weighted-average ratio for the company's current product mix.
Select the photographs to display the original source in another window. Links to external sites will be displayed in another window. Terrestrial planets have hard surfaces that can be re-shaped by several different processes: impact cratering, volcanism, erosion, and tectonics.
The standard model for the formation of the Solar System (including the Earth) is the solar nebula hypothesis. In this model, the Solar System formed from a large, rotating cloud of interstellar dust and gas called the solar nebula.