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24-02-2019
Mathematics

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The cost per year in electricity for an LED Nightlight plugged in constantly is about $0.02. If you use the nightlight for 80 years, what would the electricity cost you ?

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swostika92 swostika92

24-02-2019

electricity for an LED nightlight plugged,

the cost per year = $0.02

therefore, the total cost for 80 years = $0.02*80 = $1.6

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24-02-2019

1.6...... 0.02x80 gets you 1.6

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