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If 100 people enter an area and 40 people leave what is net migration?

Answer and explanation

Correct answer: 60

Direct answer: A, 60. Net migration measures the balance between people entering and people leaving an area during a stated period. Use the formula: net migration = in-migrants − out-migrants. Thus, 100 − 40 = +60. The positive sign means that 60 more people entered than left, so migration contributed a population gain of 60. Option A is correct. Option B gives only the number who left, not the balance. Option C gives only the number who entered. Option D adds the two flows and gives total movement, but total movement is not net migration. The calculation assumes the figures refer to the same area and period. Memory cue: incoming minus outgoing gives the net balance.

Related tags

Net MigrationIn-MigrationOut-MigrationProcesses Of Population ChangePopulationGeographyClass 9 Mcq

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