Lucas gets to soccer practice at 3:45
If the bus leaves at 3:05 and it takes 25 minutes, then he arrives home at 3:30 (5 minutes + 25 minutes = 30 minutes)
Then if he leaves at 3:30 and arrives at practice 15 minutes later, he arrives at 3:45 (30 minutes + 15 minutes = 45 minutes)
Hope this helps!