Question 837576
 Peter had a noon appointment 60 miles from his home.
 He drove from his home at an average speed of 40 miles per hour, and arrived 15 minutes late.
 At what time did Peter leave for the appointment?
:
Find the actual travel time:
{{{60/40}}} = 1.5 hrs, 1 hr 30 min, which made him 15 min late, therefore
he arrived 12:15
:
12:15 - 1.30  = 10:45 was his departure time