How many miles to walk a day to stay healthy

Asked by admin @ 29/10/2021 in Mathematics viewed by 260 People

To stay healthy, Emily decided to walk for 4/5 miles everyday. She walked 2/5 mile to work and walked 1/4 mile at lunchtime. How much more does she need to walk after dinner is she wants to meet her target distance?

Answered by admin @ 29/10/2021

Answer:

distance need to walk is 3/20

Step-by-step explanation:

To stay healthy, Emily decided to walk for 4/5 miles everyday. She walked 2/5 mile to work and walked 1/4 mile at lunchtime.

Target distance is 4/5 miles

walked 2/5 miles and walked 1/4 miles

Total mile walked is $\frac{2}{5} +\frac{1}{4}$

LCD is 20

make the denominators same and add the fractions

$\frac{2}{5} +\frac{1}{4}\\\frac{8}{20} +\frac{5}{20}\\\\\frac{13}{20}$

Target distance is 4/5 miles

Now subtract the miles walked from targeted distance

$\frac{4}{5} -\frac{13}{20} \\\frac{16}{20} -\frac{13}{20}\\\frac{3}{20}$

so distance need to walk is 3/20

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