To set up the equation for Aaron's total phone bill, we start with the fixed monthly charge of $48 and add the cost for each text message, which is $0.25 per message. The equation can be written as follows:
\[ 48 + 0.25t = 62 \]
Where \( t \) represents the number of text messages Aaron sent.
Next, we can solve for \( t \):
- Subtract 48 from both sides of the equation:
\[ 0.25t = 62 - 48 \] \[ 0.25t = 14 \]
- Divide both sides by 0.25 to isolate \( t \):
\[ t = \frac{14}{0.25} \]
- Calculate the right side:
\[ t = 14 \div 0.25 = 14 \times 4 = 56 \]
So, the total number of text messages Aaron sent this month is
\[ \boxed{56} \]