Tim Gan Math
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Equal changes in a model

Equal changes in a model

4 marks
TGM Original
A tank contains 180 litres initially. After each minute it contains 80% of the previous amount. Taking the initial amount as term 1, identify the progression and find the amount represented by term 4.

Solution:

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Answer:GP, \(r=\frac45\); term 4 is \(92.16\) litres.

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