Answer:
Step-by-step explanation:
From 1:45 to 4:00 is:
15 min to 2:00
from 2:00 to 4:00 is 2h
We know 1h = 60min, therefore 1min = 1/60 h
2h and 15min = 2h + 15/60 h = 2h + 1/4 h = 2 1/4h = 2.25h
