A city has a population of 300000 out of which 180000 are males 50% of the population is illiterate if 70 % of the males are literate, then the number of literate females is_________?
Correct answer: A. 24000
- A. 24000
- B. 30000
- C. 54000
- D. 60000
Explanation
Half of 300,000 people are literate, so the total number of literate people is 50% × 300,000 = 150,000 people. Literate males are 70% × 180,000 = 126,000 people, leaving 150,000 − 126,000 = 24,000 literate females. A student may choose 54,000 by subtracting literate males from the total population instead of from the literate population.
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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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