Question
The population of a village increase at the rate of 10%
during the first year and decreases at the rate of 20% during the second year. If it has 20240 inhabitants at present then find the number of inhabitants two years beforeSolution
Let the number of inhabitants two years ago = x = x*110/100*80/100 = 20240 =20240*110/100*80/100= 23,000
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