How much is 80% of 40 is greater than 4/5 of 25?
Correct answer: D. 12
- A. 4
- B. 6
- C. 9
- D. 12
Explanation
80% of 40 = 0.80 × 40 = 32, while 4/5 of 25 = 20. Their difference is 32 − 20 = 12. The likely trap is option c, 9, which results from an incorrect conversion of either 80% or 4/5.
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Percentages express a quantity as parts per hundred and support calculations involving increases, decreases, discounts, commissions, taxes, and successive changes. Questions require distinguishing percentage change from percentage points and identifying the original value when a final value and its percentage change are given.
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