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A person of weight 70 kg wants to loose ...

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)`times

B

`24xx10^(3)`times

C

`30xx10^(3)`times

D

`21xx10^(3)`times

Text Solution

Verified by Experts

The correct Answer is:
D
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