first we can convert 4 days and 6 hours into hours so since theres 24 hours in a day, is 24(4) + 6 = 96 + 6 = 102.
if x is the number of watts per hour, then we can say 102x = 10200. then solve for x, we get x = 100. the multiply that by 24 since there are 24 hours in a day, we get 2400
