Posted by **Aaron** on Tuesday, March 1, 2011 at 4:10pm.

The table shows the power ratings of four electrical appliances.

Fan heater 2 kW

Oven 3 kW

Kettle 2 kW

Microwave oven 0.75 kW

The kettle is used for a total of 30 minutes a day. It has an efficiency of 0.9

What is the cost of the energy wasted by the kettle each day?

1 0.6 p

2 1.0 p

3 6.0 p

4 9.0 p

please can someone post a walkthrough of the answer along with the answer please, Thanks in advance.

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