To model the situation described, we need to express the total travel time in terms of the bus ride time \( t \).
- Let \( t \) represent the time of the bus ride.
- Tran walked for 30 minutes, which is \( 0.5 \) hours (since 30 minutes is half an hour).
- The total travel time is given to be 4 times the bus ride time, which can be represented as \( 4t \).
Now we can set up the equation representing the total travel time: \[ \text{Total travel time} = \text{Bus ride time} + \text{Walking time} \] This can be expressed as: \[ 4t = t + 0.5 \]
Thus, the equation that models this situation is: \[ 4t = t + 0.5 \]