Sierra is baking a cake. The recipe tells her to use 1 2/3cups of sugar for the cake and 2 1/3 cups of sugar for the icing. Sierra tells her mom that she needs 5 cups of sugar to make the cupcakes. Is she correct?

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answer: the answer is one of

step-by-step explanation:   we are given to write a proper fraction where the whole is divided into an even number of equal parts less than ten, and an odd number of those parts exist.

an even number less than 10 may be one of 2, 4, 6 or 8. so, the whole may be one of these four evens.

now, an odd number of these parts must exist, so the numerator must be an odd number, one of 1, 3, 5 or 7. it cannot be 9 because then the fraction will become improper.

thus, our fraction may be one of the following