Question

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?

Answer 1

distance need to walk is 3/20

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
`(2)/(5) +(1)/(4)`

LCD is 20

make the denominators same and add the fractions

`(2)/(5) +(1)/(4)\\(8)/(20) +(5)/(20)\\\\(13)/(20)`

Target distance is 4/5 miles

Now subtract the miles walked from targeted distance

`(4)/(5) -(13)/(20) \\(16)/(20) -(13)/(20)\\(3)/(20)`

so distance need to walk is 3/20