You can upgrade lighting at your factory to LED bulbs that cost $6.95 each and last an average of 5 years. It costs S3 in labor to change a bulb. Over a 10-year period. about how much will it cost per year to install LED bulbs in 100 lamps and change the bulbs when they burn out?

Question

Roach

Mathematics

20 January, 11:54

You can upgrade lighting at your factory to LED bulbs that cost $6.95 each and last an average of 5 years. It costs S3 in labor to change a bulb. Over a 10-year period. about how much will it cost per year to install LED bulbs in 100 lamps and change the bulbs when they burn out?

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Answers (1)

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Korbin Li · Answer 1

11.95 dollars

Step-by-step explanation:

Cost of one LED bulb = 6.95 dollars

Cost of changing one bulb = 3 dollars

Life of each bulb = 5 years.

In 10 years, only one time after 5 years the bulbs would have been changed

Hence cost of 100 lamps = 695 and

cost of changing once = 500

Total cost = 1195 dollars for 11 years

Divide this by 10 years to get average cost per year

Cost of 100 lamps per year = 1195/100 = 11.95 dollars