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3 years ago

Joe goes running in the park. He runs 3 miles and does it in 42 minutes. How many minutes doe it take him to run a mile?

Mathematics

2 answers:

Simora [160]3 years ago

6 0

14 minutes per mile since 42/3 is 14

nlexa [21]3 years ago

5 0

Answer:

14 minutes

Step-by-step explanation:

Set up a proportion: $\frac{42}{3} = \frac{x}{1}$
Cross multiply, then divide: 42 × 1 = 42, 42 ÷ 3 = 14
So, it takes Joe 14 minutes to run 1 mile

I hope this helps!

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<em>Comment on the function rule</em>

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3 years ago

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Well... hell, let's just convert them all with the same denominator then

hmmm let's see, we have the denominators of 8,11 and 3

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and then we'll multiply 7/11 times (8*3) or 24
and then we'll multiply 2/3 times (8 * 11)

notice, we're simply using the other's denominator's product, to multiply the fractions... anyhow... let's check

$\bf \cfrac{5}{8}\cdot \cfrac{3\cdot 11}{3\cdot 11}\implies \cfrac{165}{264}
\\\\\\
\cfrac{7}{11}\cdot \cfrac{8\cdot 3}{8\cdot 3}\implies \cfrac{168}{264}
\\\\\\
\cfrac{2}{3}\cdot \cfrac{8\cdot 11}{8\cdot 11}\implies \cfrac{176}{264}\\\\
-------------------------------\\\\
\textit{now, which of }\cfrac{165}{264}\textit{ and }\cfrac{168}{264}\textit{ is closest to }\cfrac{176}{264}\quad ?$

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3 years ago

Joe goes running in the park. He runs 3 miles and does it in 42 minutes. How many minutes doe it take him to run a mile?​

Joe goes running in the park. He runs 3 miles and does it in 42 minutes. How many minutes doe it take him to run a mile?