Answer:
(a) 22,000
(b) D = 13,200; E = 8,800
(c) 35,000
Step-by-step explanation:
(a) The average marginal contribution per unit is:
![C_(avg) = (P_D-V_D)*M_D +(P_E-V_E)*M_E\\C_(avg)= (30-24)*0.6+(70-56)*0.4\\C_(avg)=\$9.2/unit](https://img.qammunity.org/2021/formulas/business/college/fxm67auha29g59n6j6j4agf9oaw63s63jg.png)
In order to break-even, total contribution must equal fixed costs:
![9.2*n=\$202,400\\n=22,000\ units](https://img.qammunity.org/2021/formulas/business/college/z238mrc8ih9p60gg7d9kpgkmmdmunws5mi.png)
(b) Multiply the total number of units by each product's sales mix to find the number of units of each product:
![n_D=0.6*22,000 =13,200\\n_E=0.4*22,000 = 8,800](https://img.qammunity.org/2021/formulas/business/college/cd6jq2xf2rz4sbsdm230b6r9vccy5me0y5.png)
(c) The number of units required to realize an operating income of $119,600 is:
![n*9.2=\$202,400+\$119,600\\n=35,000](https://img.qammunity.org/2021/formulas/business/college/i2rsdi7i421zzar55ogfl9k1e92b8e24dl.png)