Physics Mains Electricity

A consumer has the following appliances operating in his house for the times indicated in one day:

Appliance Time

Two 40 W bulbs 30 min

One 500 W fridge 10 hrs

Four 57 W bulbs 3 hrs

One 3kW electrical heater 45 min

One 100 W television 5 hrs

Calculate:

(a) the total power of the appliances used

(b) the total electrical power consumed in kWh in 30 days, assuming that the power consumption per day is the same.

MUST SHOW WORKINGS