There is many ways to lose weight! Do exercise, drink Green tea, running in morning, Jumping Rope
3.26 lbs.
That depends on your metabolism (anabolism/catabolism) rate and how much you exercise in any given week.
Attempting to lose 10 pounds in one week is absurd. You'd have to be on the ab circle 20 hours a day.
41.6 lbs.
The most you can lose safely is 3 pounds per week, and then only if you are exercising enough to get your heart rate up for 30 minutes to an hour.
While a diet plan and losing weight is good, I would not recommend trying to lose weight that fast. 20 lbs in 1 month is really fast and you shouldn't try to lose more weight than 2 lbs a week.
Excersie
You cannot lose 20 pounds in one hour by any natural means.
20% of 623 lbs (pounds) is the same as writing it: 0.2 x 623. Calculations say that 20% of 623 lbs is 124.6 lbs.
You're asking about "how long", with something that has "in a week" already in the question - you might want to rethink that. Anyway, trying to lose 20 lbs in a week is unhealthy, very, very difficult and very unlikely to either succeed or give a lasting result. Aim for losing 1-3 lbs/week instead, which is fairly easy on a sensible diet. You'll reach your goal in a couple of months anyhow, with a much greater chance of both success and a sustainable result.
20 lbs
i weight 150 i need to lose 20 lbs