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the ratio of sugar to the cocoa in a dessert recipe is 2:5. If cups of sugar are used, how many cups of cocoa are to be used?


The ration of blue candies to yellow candies in a box is 5:7. If the box contains 70 yellow candies, how many blue candies are there?


A 60-inch piece of wood is cut to three parts when lengths having a ratio of 2:3:5. What is the length of the shortest piece?​