Question

The annual rate rate of growth in population of a certain city is 8%if it presents population is 196830 what was the population three years ago

Answer 1

if x = last years population, then;

108% of x = 196830

x = 196830 x 100/108

x = 182250

if y= population two years ago, then;

108% of y = 182250

y= 182250 x 100/108

y = 168750

if z= population three years ago, then;

108% of x = 168750

z = 168750 x 100/108

z= 156250

Answer 2

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