In the next electricity bill the household will owe $40.
Explanation:
Given that a household uses 400 kilowatt-hours of energy in one month, and DWP charges $ 0.10 per kilowatt-hour, to determine how much will this household owe on their next bill, the following calculation must be performed:
400 x 0.10 = X
40 = X
Thus, in the next electricity bill the household will owe $40.
