Cheryl and Marcus are going to make a two-tiered cake. The smaller tier is \(\frac{2}{3}\) the size of the larger tier. The recipe for the bottom tier calls for \(\frac{3}{5}\) cup of water. How much water will they need to make the smaller tier?
They made a model to represent the problem. Cheryl says they need \(\frac{6}{9}\) cup of water. Marcus says they need \(\frac{2}{5}\) cup water. Who is correct? Explain.
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