Wikipedia:Reference desk/Archives/Mathematics/2010 November 7
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November 7
editCheck my math please
editCould someone check my math here? A random sample of wastewater shows a BOD of 959 mg/L. Total wastewater is 5.8 million gal/day. 959 x 3.875 (liters to gal) = 3.72gm/gal x 5.8 mgd = 21,576 kg/day. Right?
The same sample shows lead at 2.49 mcg/L so 2.49 x 3.875 x 5.8 mil = 55.96 grams.
Have I got all the zeros and decimals in the right places here? Thanks! —Preceding unsigned comment added by 148.66.156.170 (talk) 23:31, 7 November 2010 (UTC)
- Google Calculator comes close to agreeing with you with 959 mg/L * 5.8 million gal/day in kg/day = 21 055.2174 kg / day. The second calculation gives 54.668917 g / day. 67.158.43.41 (talk) 23:47, 7 November 2010 (UTC)