A salary increases by 10% and then decreases by 10%. What is the overall result?
Correct answer: C. A 1% decrease
- A. No change
- B. A 1% increase
- C. A 1% decrease
- D. A 10% decrease
Explanation
Taking an initial salary of 100, the increase gives 110 and the later decrease gives 99. Thus, the final amount is 1% below the original, not unchanged.
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About Basic Mathematics: Fractions, Percentages, Ratios and Indices
Work with fractions includes simplification, conversion, operations and comparison, while percentages cover increases, decreases, profit, loss and reverse percentage calculations. Ratios and proportions describe relationships between quantities, and indices cover laws of exponents, zero and negative powers, fractional indices, and scientific notation.
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