Answer:
17:55
Explanation:
What time did the plane leave London City airport?
speed = distance/time
time = distance/speed
time = 256 miles / 192 mph
time = 1.333 hours = 1 1/3 hours = 1 hour 20 minutes
The plane flew for 1 hour and 20 minutes.
19:15 - 1:20 =
(Borrow 1 hour from 19 leaving 18. Convert the borrowed hour to 60 minutes and add to 15 minutes making it 75 minutes.)
= 18:75 - 1:20
= 17:55