Answer:
196.63 hours (approx. 197 hours)
Explanation:
So first neatly write out all the given info:
swimming = 340 kcal/h
walking = 160 kcal/h
timeWalk = 9.0h
timeSwim = 3.0h
3500 kcal = 1lbs
How many hours of walk to lose 1.0lbs
So we know that to lose 1.0lbs you have to burn 3500 calories, so if you want to do that simply by walking, we need to know how many calories you burn an hour by walking.
This can be done by 160kcal/9.0h = 17.8 kcal/h.
Now with this, to find the number of hours to burn 3500 kcal, you just divide both 3500 and 17.8 (3500/17.8) and you get 196.63 hours
Hope that answers your question.
