Mathematics, 16.12.2021 02:20 shahedalahmad2017

A person who is 5 ft tall is walking away from a lamppost at a rate of \math-container{30} ft per minute. At the moment that they are {10} ft away, their shadow is \math-container{20} ft long. Find the rate at which the length of the shadow changes when the person is 30 ft from the lamppost.

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