Ratio, Proportion and Percentages Puzzle – Challenge 27

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Ratio, Proportion and Percentages Puzzle – Challenge 27

Challenge:

The ratio of sugar to flour for cooking a cake is \(\frac{1}{2}\) to \(2\). What percent of the cake is flour? (Assume that there are only sugar and flour in the cake)

A- \(50\%\)

B- \(60\%\)

C- \(70\%\)

D- \(80\%\)

E- \(90\%\)

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The correct answer is D.

The ratio of sugar to flour is \(\frac{1}{2}\) to \(2\). Therefore, the ratio of the flour to whole is \(2\) to \(2\frac{1}{2}\) or \(\frac{2}{2\frac{ 1}{2}} = 0.8 = 80\%\)
Therefore, \(80\%\) of the cake is flour.

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