Question

Cho used 2 cups of flour to bake a cake. She used 3 cups of flour to bake a loaf of bread. How much more flour did Cho use to bakethe loaf of bread than to bake the cake?c ở cupc5 cupsC = cup1 cups

Answer 1

Choe used 7/12 cup (option A)

Step-by-step explanation:

Number of cups of flours to bake a cake = 2 2/3

Number of cups of flours to make a loaf of bread = 3 1/4

To find how much more cups of flour was used in baking a loaf of bread than a cake, we will subtract the number of cups for the cake from the number of cups from the bread

`\begin{gathered} 3(1)/(4)\text{ - 2}(2)/(3) \\ \text{convert the mixed fraction to improper fraction:} \\ 3(1)/(4)\text{ = 13/4} \\ \text{2}(2)/(3)\text{ = 8/3} \\ \\ 3(1)/(4)\text{ - 2}(2)/(3)\text{ = }(13)/(4)\text{ - }(8)/(3) \end{gathered}`
`\begin{gathered} \text{LCM of both fractions: 12} \\ (3(13)-4(8))/(12)\text{ } \\ =\text{ }\frac{39\text{ - 32}}{12} \\ =\text{ }(7)/(12) \end{gathered}`

Hence, Choe used 7/12 cup more to bake the loaf of bread (option A)