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suf7

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HI I am really stuck with this question, i don't know what to do with it??..can anyone help??..id like to learn how to solve this question...thanks.

A man makes two cups of instant coffee four times a day. On every occasion he fills the kettle up to the 10-cup level. What is the cost of the energy he wastes in one year by heating more water than is neccessary??..make suitable assumptions to solve.

Pleeeeeeeeeez help me!

A man makes two cups of instant coffee four times a day. On every occasion he fills the kettle up to the 10-cup level. What is the cost of the energy he wastes in one year by heating more water than is neccessary??..make suitable assumptions to solve.

Pleeeeeeeeeez help me!

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