A 120-pound woman working in an office consumes about 2.2 103 kcal/day, whereas the same woman

Question:

A 120-pound woman working in an office consumes about 2.2 × 103 kcal/day, whereas the same woman climbing a mountain needs 3.4 ×103 kcal/day.
(a) Express these numbers in terms of joules per second per kilogram of body mass (= watts per kilogram).
(b) Which consumes more power (watts), the office worker or a 100 - W light bulb?