Answer:
The actual distance is <u>127 miles</u>.
Step-by-step explanation:
Given:
On a map, the distance from Los Angeles to San Diego is 6.35 cm.
The scale is 1 cm = 20 miles.
Now, to find the actual distance.
Let the actual distance be 
And the distance on map is 6.35 cm.
<em>So, 6.35 cm is equivalent to</em> 
<em>And as given on the scale 1 cm is equivalent to 20 miles.</em>
Now, to get the actual distance by using cross multiplication method:

<em>By using cross multiplication we get:</em>
⇒ 
⇒ 
Therefore, the actual distance is 127 miles.