Question Bank • QB_PARAMETRIC_GA_PRC_016 NAT • 1 Mark

Section 8: General Aptitude

Quantitative: Percentages, Profit-Loss, Ratios & Averages

Subtopic: Equivalent single discount of successive discounts

Question Statement:

A retail store offers two successive discounts of $20\%$ and $10\%$ on the marked price of an agricultural implement. The equivalent single discount percentage is ________ $\%$ (round off to two decimal places). (Variation QB_PARAMETRIC_GA_PRC_016)

Answer Key:

28.00

Step-by-Step Solution & Explanation

The equivalent single discount for two successive discounts $d_1$ and $d_2$ is: $d_{eff} = d_1 + d_2 - \frac{d_1 \times d_2}{100}$ Given $d_1 = 20\%$ and $d_2 = 10\%$: $d_{eff} = 20 + 10 - \frac{20 \times 10}{100} = 30 - 2.00 = 28.00\%$
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