Question
The population of a town increases by 20% annually. If
its present population is 864000, then what was the difference between its population 2 years ago and 1 year ago?Solution
Present population = 864000 Population before 1st year = 1/1.2 × 864000 = 72000 Population before 2nd year = 1/1.2 × 72000 = 60000 Therefore, required difference = 720000 - 60000 = 120000
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