APGP Revision Worksheet Q1

APGP Revision Worksheet Q1

A factory gets permission to dispose, at the start of every day, \(600\) kg of waste into a stream of water.

The running stream removes \(40\%\)  of any waste present, by the end of the day.

Determine a simplified expression for the amount of waste present in the stream at the end of the \({{n}^{\mathrm{th}}}\) day.

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Answer:\({u_n = 900\left[ 1 - \left( \frac{3}{5} \right)^n \right]}\)

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