Q15 of 52 Page 117

As a result of publicity on smoking, the number of smoker is decreased by % every year in comparison to its previous year. If the number of smokers at present in a city is 33750, let us write by calculating, the number of smoker in the city 3 years before.

Let the number of smokers in the city 3 years before be x.


∴ At present the number of smokers in the city


By the condition,





∴ x = 41289.43


∴ The number of smokers in the city before 3 years was 41289.43.


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