Question

Double-glazing all the windows in a house will cost £4000. It will mean a yearly saving of £200 on energy bills. What is the payback time in years

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Answer 1

Hey Could you please tell your Birthday year

If I'm not wrong tomorrow is your birthday right

Yeah me , 2006 ,12th March

Answer 2

Answer:

refers to the attachment

Step-by-step explanation:

Are you sad :(