Question

If 1 lb of fat is stored by the body for each 14.6 ✕ 103 kj of excess nutritional energy consumed, how many bags of chips contain enough nutritional energy to result in 3 lb of body fat?

Answer 1

When 14.6 × 103 k j of nutritional energy is consumed , 1 lb of fat is stored by the body.

 It means amount of nutritional energy is directly proportional to amount of fat stored.

Now amount of fat required = 3 lb

A.T.Q

Amount of fat stored= K × Amount of nutritional energy taken

$\frac{F_{1}}{N_{1}} = \frac{F_{2}}{N_{2}}$

⇒$\frac{1}{14.6\times103} =\frac{3}{N_2}$

⇒$N_{2} = 3\times14.6\times103$

⇒$N_{2}$ = 4511.4 kj

For 3 lb of fat 4511.4 k j of excess nutritional energy should be consumed.

It is not given that how many k j a bag contain, So we can't calculate the number of bags.