Question
During the first year the population of a village
increased by 5% and during the second year it diminished by 5%. At the end of the second year its population was 47,880. What was the population at the beginning of the first year?Solution
Let initial population = x After first year = x×1.05 After second year = x×1.05×0.95=x×0.9975 Given x×0.9975=47880 x=47880÷0.9975=48000
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