1. ms = 0,25 * 400 = 100g, mr = 400 + 80 = 480g
Cp = 100/480 * 100% = 20,83%
2. ms = 0,06 * 500 + 12 = 30 + 12 = 42g
mr = 500 + 12 = 512g; Cp = 42/512 * 100% = 8,2%
3. ms = 0,04 * 150 + 0,1 * 250 = 6 + 25 = 31g
mr = 150 + 250 = 400g; Cp = 31/400 * 100% = 7,75%