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A person of weight 70 kg wants to loose 7 kg by going up and dwon 12 m stairs.Assume he burns twice as much fat while going up than going down.If 1 kg of fat is burnt on expending 9000 k-cal.How many times must he go up and down to reduce his 7 kg weight? `(Take g=10 ms^(-2))`A. `18xx10^(3)`timesB. `24xx10^(3)`timesC. `30xx10^(3)`timesD. `21xx10^(3)`times

Answer» Correct Answer - D


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