Christopher weighs 211 pounds and has a BMI of 28.5. How many pounds must he gain or lose to get into the healthy BMI range? Please show work. Thanks in advance!
so in the information you are missing the height let's find it :) first plug in what you know: 28.5 = (211 * 703) / (height)^2 then solve for (height) 28.5 (height)^2 = (211 * 703) multiplied both sides by (height)^2 (height)^2 = (211 * 703) / 28.5 divided both sides by 28.5 (height) = square root [(211 * 703) / 28.5] square rooted both sides (height) = 72.143 inches
The healthy BMI is about 25 so 25 = (pounds)(703) / (72.143^2) 25(72.143^2) / (703) = (pounds) divide by 703, multiply by (72.143^2) pounds = 185
211 - 185 = 26 Therefore Christopher would have to lose 26 pounds.
*Note: If the BMI you wanted to use was not 25, then just replace it like this (pounds) = (BMI)(72.143^2) / (703) = goal weight
