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5 December, 07:27

In order to lose 1 pounds one, must burn off 3500 calories. To burn off 100 calories you must bicycle at 9 mph for 15 minutes. How long do you have to bicycle at 9 mph to lose 7 ponds?

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  1. 5 December, 07:33
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    To burn off one pound,

    100 cal * x = 3500

    x = 35

    You'll need 35 15 minutes to burn off one pound so, 525 minutes per pound, and you need to lose 7 pounds so,

    525*7 = 3675 minutes OR 61.25 hours
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