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Easy · Mental Math & Estimation · Quant Trader interview question · mental-math, arithmetic, percentages, trading-math, basics
You are verifying the transaction costs on a block trade. The fee schedule stipulates a charge of 7% on a trade size of 50 units. Calculating $0.07 \times 50$ usually requires a moment of pause. However, using the "Swap Rule" makes this instantaneous. Calculate the result of: $$ 7\% \text{ of } 50 $$