If each foot of water in a lake screens out 60% of the light above, what percent of the light passes through 5 feet of water?

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asked Jun 17, 2017 154k views

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Wayne Piekarski · Answer 1 · 2017-06-22T05:14:22+0000

The amount of light passing through each foot the water in the lake = 100% - 60% = 40%
The percent of light passing through 5 feet of water = 0.4^5 = 0.01024 = 1.02%

If each foot of water in a lake screens out 60% of the light above, what percent of the light passes through 5 feet of water?

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