For each 10-degree adjustment on your

Question

water heater thermostat, you can reduce
carbon dioxide emissions by 500 pounds a year. By how many pounds will you reduce your carbon dioxide footprint if you turn down your water
heater thermostat from 140¢ªF to 120¢ªF over a 5 year period?

Answer 1

(140-120)/10 * 500Lbs/yr. * 5yrs=5000 Lbs.