Calculate the Cost of Goods Sold (COGS) and Net Profit for Question 11b and 11c.

$$\text{Total Purchases} = \text{Cash purchase} + \text{Credit purchases}$$ $$\text{Total Purchases} = \text{K } 350.00 + \text{K } 250.00 = \text{K } 600.00$$

$$\text{COGS} = \text{Stock at start} + \text{Purchases} - \text{Stock at end} + \text{Surplus}$$ $$\text{COGS} = \text{K } 800.00 + \text{K } 600.00 - \text{K } 650.00 + \text{K } 100.00$$ $$\text{COGS} = \text{K } 1400.00 - \text{K } 650.00 + \text{K } 100.00$$ $$\text{COGS} = \text{K } 750.00 + \text{K } 100.00$$ $$\text{COGS} = \boxed{\text{K } 850.00}$$

ii) Calculate the Net Profit.

$$\text{Total Sales} = \text{Cash sales} + \text{Credit sales}$$ $$\text{Total Sales} = \text{K } 790.00 + \text{K } 320.00 = \text{K } 1110.00$$

$$\text{Net Profit} = \text{Sales} - \text{Cost of goods}$$ $$\text{Net Profit} = \text{K } 1110.00 - \text{K } 850.00$$ $$\text{Net Profit} = \boxed{\text{K } 260.00}$$

Question 11c

i) Calculate the Cost of Goods Sold (COGS).

$$\text{COGS} = \text{Stock at start} + \text{Purchases} - \text{Stock at end}$$ $$\text{COGS} = \text{K } 1800.00 + \text{K } 13500.00 - \text{K } 3650.00$$ $$\text{COGS} = \text{K } 15300.00 - \text{K } 3650.00$$ $$\text{COGS} = \boxed{\text{K } 11650.00}$$

ii) Calculate the Net Profit.

$$\text{Net Profit} = \text{Sales} - \text{Cost of goods}$$ $$\text{Net Profit} = \text{K } 20790.00 - \text{K } 11650.00$$ $$\text{Net Profit} = \boxed{\text{K } 9140.00}$$