Calculate the following:

COMPANY A

Mark-up 25 Percent

Sales N$ 12 500

Inventory 01.04.2020 N$ 4 500

Inventory 31.03.2021 N$ 3 800

Calculate: Gross Profit, Purchases and Cost of Sale?

COMPANY B

Margin 20 Percent

Purchases N$ 22 400

Inventory 01.06.2020 N$ 8 700

Inventory 31.05.2021 N$ 5 100

Calculate: Gross Profit, Sales and Cost of Sale?

COMPANY C

Sales N$ 54 500 Gross Profit N$ 12 000

Calculate: Percentage Mark-up, Margin and amount of Cost of Sale?