SOLUTION: The lighting for a billboard is provided by solar energy. If 8 energy panels generate 10 watts of power, how many panels are needed to provide 800 watts of power?

Question 1078516: The lighting for a billboard is provided by solar energy. If 8 energy panels generate 10 watts of power, how many panels are needed to provide 800 watts of power?
Found 2 solutions by Alan3354, rothauserc:
Answer by Alan3354(69443) (Show Source): You can put this solution on YOUR website!
The lighting for a billboard is provided by solar energy. If 8 energy panels generate 10 watts of power, how many panels are needed to provide 800 watts of power?
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80 times the power --> 80 times as many panels

Answer by rothauserc(4718) (Show Source): You can put this solution on YOUR website!
(8/10) = (x/800)
:
cross multiply the fractions
:
10x = 6400
:
x = 640
:
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640 panels are required
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