Please help I don’t get this at all

Answer:
11.82 kilometers in Luis's journey in total
Step-by-step explanation:
As per the statement:
To visit his grandmother
Distance Luis takes a train 6.37 kilometers
Distance Luis takes a car 5.45 kilometers.
We have to find the total distance.
[tex]\text{Total distance} = \text{distance by train}+\text{distance by car}[/tex]
Substitute the given values we have;
[tex]\text{Total distance Lui's journey} = 6.37+5.45 = 11.82[/tex] km
Therefore, 11.82 kilometers in Luis's journey in total