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Suppose Peter started with $\$x.$ How much remained after buying the pizza? How much did he spend on drinks? What is the total that he spent on pizza and drinks? This is $1 - \frac29 = \frac79$ of the original amount. Solve for $x.$ Check your answer. Penny | ||||||||||||
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Math Central is supported by the University of Regina and The Pacific Institute for the Mathematical Sciences. |