the population of a country increased 7 percent in every 10 years.if its present population be 4007150 what was the population in 20 years ago.
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the population of a country increased 7 percent in every 10 years.if its present population be 4007150 what was the population in 20 years ago.
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Answer:
let the population 20 years age be 100
population after 10 years =107
population after next 10 years = 114.49
when population is 114.49 the population 20 years ago was 100
when population is 4007150 the population 20 years ago was 100/114.49×4007150
3500000