POWER = energy consumed/time
Energy consumed = power x time
energy consumed = (5×50)+(4×100)×101000\frac{(5 \times 50) + (4 \times 100) \times 10}{1000}1000(5×50)+(4×100)×10
= 6.5KWh.
but 1KWh = 2kobo
then 6.5KWh = 6.5 x 2 = 13kobo →#0.13
