Answer :
from 11:45am to 12pm is only 15 minutes.
from 12pm to 1 is 1 hour.
from 1pm to 1:20pm is 20 minutes.
1 hr plus 15 mins plus 20 mins, 1 hour and 35 minutes.
from 11:45am to 12pm is only 15 minutes.
from 12pm to 1 is 1 hour.
from 1pm to 1:20pm is 20 minutes.
1 hr plus 15 mins plus 20 mins, 1 hour and 35 minutes.