Half of Ethan's string is equal to 2/3 of Kayla's string. The total length of their strings is 10 feet. How much longer is Ethan's string than Kayla's? Drawing

Respuesta :

Answer: [tex]\frac{10}{7}[/tex] meters


Step-by-step explanation:

Let x be the length of Kaya's string and y be the length of Ethan's string

Then According to the question, we have the following equations

[tex]\frac{1}{2}y=\frac{2}{3}x\\\Rightarrow\ y=\frac{4}{3}x......(1)\\x+y=10....(2)[/tex]

Substitute the value of y from (1) in (2), we get

[tex]\frac{4}{3}x+x=10\\\Rightarrow\frac{4x+3x}{3}=10\\\Rightarrow\ \frac{7x}{3}=10\\\Rightarrow\ x=\frac{30}{7}[/tex]

The length of Kaya's string =[tex]\frac{30}{7}[/tex] feet

The length of Ethan's string =[tex]\frac{4}{3}\times\frac{30}{7}=\frac{40}{7}[/tex] meters

The difference in their lengths=[tex]\frac{40}{7}-\frac{30}{7}=\frac{10}{7}[/tex]

Hence, Ethan's string is [tex]\frac{10}{7}[/tex] meters longer than the Kaya's string.



Answer:

Ethan's string is [tex]=\frac{10}{7}[/tex] feet longer than Kayla's string.

Step-by-step explanation:

Let Ethan's string = x feet

and Kayla's string = y feet

According to question,

Half of Ethan's string is equal to 2/3 of Kayla's string that is,

[tex]\frac{1}{2}x=\frac{2}{3}y[/tex]

[tex]\Rightarrow x=\frac{4}{3}y[/tex]   ..............(1)

Also,The total length of their strings is 10 feet that is,

[tex]x+y=10[/tex]

Put value of x from (1),

[tex]\frac{4}{3}y+y=10[/tex]

Solving for y, we get,

[tex]\Rightarrow y(\frac{4}{3}+1)=10[/tex]

[tex]\Rightarrow y(\frac{4+3}{3})=10[/tex]

[tex]\Rightarrow y(\frac{7}{3})=10[/tex]

[tex]\Rightarrow y=\frac{10 \times 3}{7}[/tex]

[tex]\Rightarrow y=\frac{30}{7}[/tex]

Thus,  Length of Kayla's string is [tex]\frac{30}{7}[/tex] feet.

and Put value of y in (1) to get value of x,

[tex]\Rightarrow x=\frac{4}{3} \times \frac{30}{7}[/tex]

[tex]\Rightarrow x=\frac{40}{7}[/tex]

Thus,  Length of Ethan's string is [tex]\frac{40}{7}[/tex] feet.

Length of Ethan's string is longer than Kayla's string = Length of Ethan's string-Length of Kayla's string.

[tex]=\frac{40}{7}-\frac{30}{7}[/tex]

[tex]=\frac{10}{7}[/tex]

Thus, Ethan's string is [tex]=\frac{10}{7}[/tex] feet longer than Kayla's string.


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