Question

Calculate the cost of operating a machine of 450 W for 8 hours at the rate of Rs .4 per unit​

Answer 1

Answer:

Energy of one day =Power×Time=400W×8h=3.2KWh

Energy of 30 days =3.2KWh×30=96KWh

So, cost of the energy =96×3=Rs.288

_________________________

Hope it will helpful to you !

mark as brilliant answer

Answer 2

450 W machine

8 hours

Rs .4 per unit

energy = 450*8 = 3600 w/h = 3.6 kw/h

price = 3.6 * 4 =14.4