Chong bought a house for RM \( \frac{3}{4} \) million. After a year he sold it for RM \( \frac{4}{5} \) million. Find his profit. \( \begin{array}{ll}\text { A. RM20000 } & \text { C. RM200 } 000 \\ \text { B. RM50000 } & \text { D. RM300 } 000\end{array} \)

Let's denote the cost of the house as \( C \) and the selling price as \( S \). Given: - The cost of the house, \( C = \frac{3}{4} \) million - The selling price of the house, \( S = \frac{4}{5} \) million To find the profit, we need to calculate the difference between the selling price and the cost of the house. Profit = Selling Price - Cost Substitute the given values: Profit = \( \frac{4}{5} \) million - \( \frac{3}{4} \) million To find the profit, we need to calculate the difference between the selling price and the cost of the house. Let's calculate the profit. Calculate the value by following steps: - step0: Calculate: \(\frac{4}{5}-\frac{3}{4}\) - step1: Reduce fractions to a common denominator: \(\frac{4\times 4}{5\times 4}-\frac{3\times 5}{4\times 5}\) - step2: Multiply the numbers: \(\frac{4\times 4}{20}-\frac{3\times 5}{4\times 5}\) - step3: Multiply the numbers: \(\frac{4\times 4}{20}-\frac{3\times 5}{20}\) - step4: Transform the expression: \(\frac{4\times 4-3\times 5}{20}\) - step5: Multiply the numbers: \(\frac{16-3\times 5}{20}\) - step6: Multiply the numbers: \(\frac{16-15}{20}\) - step7: Subtract the numbers: \(\frac{1}{20}\) Chong's profit from selling the house is RM 0.05 million, which is equivalent to RM 5000. Therefore, the correct answer is B. RM50000.