If 35% of a number is 12 less than 50% of that number, then the number is_________?
Correct answer: D. 80
- A. 40
- B. 50
- C. 60
- D. 80
Explanation
The difference between 50% and 35% is 15%, so 15% of the number equals 12: (15/100)n = 12, giving n = 12 x 100 / 15 = 80. Option b, 50, incorrectly treats 35% or 50% as the relevant percentage instead of their difference.
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About Percentages
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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