<PRE><B>Question 224292</B>
The rate at which calories are burnt is proportional to the weight of the person. 3,500 calories must be burnt off for a person to lose 1 pound.
Comment: What is the weight of this person who burns 3500 cal and thus
loses 1 pound?
------- 
How many hours of walking at 4 1/2 mi/h would be needed for 
a 190-pound person to lose 4 pounds?
Commetn: Good question
---------------------------------------- 
A 150 pound person burns 440 calories an hour walking at 4 1/2 mph 
Need to burn 14,000 calories. A 150 pound person would need to walk 31.8 hours.
---------------------------------------- 
How do I determine how long a 190 pound person needs to walk? 
I know it is less than that of a 150 pound person.
Comment How do you know that?
-------------------------------------
Comment: This problem is very confusing.  It seems impossible
to properly relate weight, walking speed, and calories and 
weight loss.
=========================================
Cheers,
Stan H.</PRE>