300,800,400
Million, thousand, hundred
This is quite simple. We will first add the amount of miles walked together.
3.25+5.5=8.75
Then we will divide 175 by the number of miles walked which in this case is 8.75.
Then we get 20 which is the amount of money that his parents donated for every mile that he walked.

<h2>
Explanation:</h2>
Step 1. Write the given expression

Step 2. Apply distributive property:

Step 3. Combine like terms:

<h2>Learn more:</h2>
Distributive property: brainly.com/question/10794694
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