For this question, we will need to make some assumptions. We will assume that nothing else changes in this scenario--as in we do the same things but only change our calories consumption. Theoretically 3500 calories is equal to 1 pound. Therefore, to lose 1 pound, we would need to consume 3500 fewer calories overall. Therefore, to find out how many days it would take us to lose 1 pound is:

3500/500=7 days