1.

Weightof Sovanbabu is 80 kg. In order to reduce his weight, he started regular morning walk. He decided to reduce his weight every year by 10%. Calculaate the weight of Sovanbabu after 3 years.

Answer» The present weight of Sovanbabu`=80` kg
`:.` The weight of Sovanbabu will be after 3 years `=80xx(1-10/100)^(3)` kg `=80xx(9/10)^(3)` kg
`=80xx(9xx9xx9)/(10xx10xx10)kg=58.32kg`
Hence after 3 years the required weight of Savanbabu will be 58.32 k.


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