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Population literacy composition: Combine adult/child ratios and percentages to find overall literacy. Adults : children = 2 : 3 in the city. Adults are 40% illiterate (so 60% literate); children are 85% literate. What percentage of the total population is literate? Choose the correct percentage.

Difficulty: Easy

Correct Answer: 75%

Explanation:

Assume a convenient base
Let adults = 2k and children = 3k ⇒ total = 5k.

Literate counts
Adults literate = 60% of 2k = 1.2k.Children literate = 85% of 3k = 2.55k.Total literate = 1.2k + 2.55k = 3.75k.

Overall percentage
(3.75k / 5k) × 100% = 75%.

Final Answer
75%

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