Cash, profit and a supplied calculation

A fictional business exercise records cash received for goods and a separate amount held for another person under an expressly limited purpose. A learner adds both amounts to earned profit and proposes using all the money for operating expenses. The exercise separately supplies an assumed tax base of 1000 units and a hypothetical rate of 20 percent solely for a numerical practice task. No actual national rate, professional tariff or completed tax return is stated. The class must distinguish ownership, accounting classification and arithmetic before explaining the limits of its result. No inference about a real client account or actual tax liability is authorized by these invented numbers.