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To solve the inequality \( 3r - 47.5 > 21.5 \), we can start by isolating \( r \).
1. Add \( 47.5 \) to both sides:
\[
3r > 21.5 + 47.5
\]
\[
3r > 69
\]
2. Divide both sides by \( 3 \):
\[
r > 23
\]
Now we need to find which of the given options satisfies the condition \( r > 23 \).
The options provided are:
- 23
- 23.5
- 22.5
- 22
From these, the value \( 23.5 \) is greater than \( 23 \).
Thus, the correct answer is:
**23.5**