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An Iyonix PC is sold for £1200 at a reduction of 20% on its recommended retail price. What was the computer's original price?

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\(100\%-20\%=80\%\\\\\begin{array}{ccc}80\%&-&\£1200\\\\100\%&-&\£x\end{array}\\\\\\cross\ multiply\\\\80x=1200\times100\\\\80x=120,000\ \ \ \ |divide\ both\ sides\ by\ 80\\\\x=1500\ (\£)\\\\Answer:The\ computer's\ original\ price\ was\ \£1500.\)

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