amdefamily amdefamily
  • 16-01-2023
  • Mathematics
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The lightbulb in my kitchen has blown. I checked the prices of bulbs online, which one should I buy and why? I have my kitchen light on for 5 hours a day every day for a year. The energy company charges me 12p per kWh (kilowatt hour) How much would it cost to run a normal vs energy efficient bulb for a year? ​

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