Joel walked 2/5 of a mile to the store, 3/10 of a mile to the library, and 1/20 of a mile to the post office. Let x = the total distance Joel walked. Hw far did he walk? Draw a picture.

0.4 + 0.3 + 0.05 = ______ mile

It's 0.75

What is 13รท1,000

To find the total distance Joel walked, we need to add up the distances he walked to the store, library, and post office.

First, let's draw a picture to visualize the distances:

```
________ Store (2/5 mile)
|
Start |
| _________ Library (3/10 mile)
| |
|________ Post Office (1/20 mile)
```
In this picture, the arrow represents the direction Joel walked, and the numbers represent the distances in miles.

Now, to find the total distance, we add the fractions:
x = 2/5 + 3/10 + 1/20

To add fractions with different denominators, first, we need to find a common denominator.

The smallest number that 5, 10, and 20 all divide evenly into is 20.

Now, let's rewrite the fractions with the common denominator of 20:

x = (2/5) * (4/4) + (3/10) * (2/2) + 1/20
= 8/20 + 6/20 + 1/20
= (8 + 6 + 1)/20
= 15/20

Since 15/20 can be simplified, let's simplify the fraction:

x = 15/20 = (15/5) * (1/4)
= 3/4

So, the total distance that Joel walked is 3/4 of a mile.