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If 2000 people live in 10 square kilometres what will be the density?

Answer and explanation

Correct answer: 200 persons per square kilometre

The direct answer is B: 200 persons per square kilometre. Population density is found by dividing the total population by the total area. Here the calculation is \(2000\div10=200\). Therefore, each square kilometre has an average of 200 people, so the complete unit is persons per square kilometre. Option A, 100, would result from an incorrect division and is too small. Option B is correct because it follows the formula and includes the right unit. Option C, 500, does not come from dividing 2000 by 10. Option D, 2000, repeats the population number and forgets that the population must be divided by the area. The answer is an average, so it does not claim that every single square kilometre has exactly the same number of people. First write the population, second write the area, third divide, and finally write the unit. Memory cue: density means people per area.

Related tags

Density CalculationPersons Per Square KilometreArea

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