Buy–sell profitvery hardFree question
A trader buys stock at £15/unit, then sells 41 units at £19 and 36 units at £25. What is the total profit?
A£1,679
B£308
C£539
D£164
E£524
Worked solution
Track the money in stages: total cost, then revenue from each selling leg, then profit = revenue − cost. The correct answer is £524. Traps to avoid: £1,679 comes from the "revenue not profit" error; £308 comes from the "one price for all" error; £539 comes from the "averaged prices" error; £164 comes from the "one lot only" error.
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