The population of a town increases by 8% annually. If the present population is 54000, what was it a year ago?
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∴ Present population = 108% of Z
⇒ 54000 = Z × 108/100
⇒ 54000 = Z × 27/25
⇒ Z = 54000 × 25/27
⇒ Z = 2000 × 25
⇒ Z = 50000
⇒ 54000 = Z × 108/100
⇒ 54000 = Z × 27/25
⇒ Z = 54000 × 25/27
⇒ Z = 2000 × 25
⇒ Z = 50000
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