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Lin ran 2 ¾ miles in ⅖ of an hour. Noah ran 8 ⅔ miles in 4/3 of an hour. How long would it take Lin to run 10 mile at that rate?

Sagot :

We have that Lin ran

[tex]2\frac{3}{4}=\frac{11}{4}[/tex]

11/4 miles in 2/5 hours. So we have that the rate is

[tex]\frac{\frac{11}{4}}{\frac{2}{5}}=\frac{55}{8}[/tex]

55/8 miles per hour

if we want to know the time she would need to run 10 miles we have to divide 10 by the rate

[tex]\frac{10}{\frac{55}{8}}=\frac{80}{55}=\frac{16}{11}=1\frac{5}{11}hours[/tex]

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