In a city , 40% of the people are illiterate and 60% are poor. Among the rich , 10% are illiterate. What percentage of the poor population is illiterate?

In a city , 40% of the people are illiterate and 60% are poor. Among the rich , 10% are illiterate. What percentage of the poor population is illiterate? Correct Answer 60%

Let, total = 100 people, then, poor = 60, rich = 40. illiterate rich = 10% of 40 = 4 poor = 40 - 4 = 36 Let, x% is illeterate poor x% of 60 = 36 ⇒x100×60 = 36 ∴x = 1000

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From 2017 to 2018, the population of city P increases by 10% and the population of city Q increases by 20%. What was the population of city P in 2017? Statement I: Sum of populations of cities P and Q in 2018 was 160000. Statement II: Population of city Q was 25% less than the population of city P in 2017.