In the after school Dena, Shawn, and Amanda knit scarfs that are the same size with yellow, white, and blue yarn. Denas scarf is 2/5 yellow, Shawn's scarf is 3/5 , and Amanda's scarf is 3/4 yellow. The rest of each scarf has an equal amount of white and blue. Describe how Amanda could make her argument that her scarf has the most yellow.

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Answer:

[tex]\frac{8}{20}<\frac{12}{20}<\frac{15}{20}[/tex]

Step-by-step explanation:

We have been given that in the after school Dena, Shawn, and Amanda knit scarfs that are the same size with yellow, white, and blue yarn. Denas scarf is 2/5 yellow, Shawn's scarf is 3/5 , and Amanda's scarf is 3/4 yellow.

To make Amanda's argument true, let us compare each fraction by making a common denominator.

We can see that least common denominator of each fraction would be 20.

[tex]\text{Dena's scarf}=\frac{2}{5}\Rightarrow\frac{2*4}{5*4}=\frac{8}{20}[/tex]

[tex]\text{Shawn's scarf}=\frac{3}{5}\Rightarrow\frac{3*4}{5*4}=\frac{12}{20}[/tex]

[tex]\text{Amanda's scarf}=\frac{3}{4}\Rightarrow\frac{3*5}{4*5}=\frac{15}{20}[/tex]

Since [tex]\frac{8}{20}<\frac{12}{20}<\frac{15}{20}[/tex] , therefore, Amanda's scarf has the most yellow.