A certain CD has a mass of 10 grams. How many of these CDs would you need to equal a total mass of 2 kg? write the number of CDs needed in the box.

Several paint mixtures are made by mixing blue paint and white paint. paint colors blue paint white paint mixture a 5 cups 12 cups mixture b 6 cups 6 cups mixture c 4 cups 12 cups mixture d 5 cups 6 cups which mixture has the highest ratio of blue paint to white paint