Question

A train left town A for town B. The journey took 3 hours 40 minutes. The train arrived at town B at 11:05am, what time did the train leave town A?
11:05 - 3:40 = 10:65 - 3:40 = 7:25 AM
11:05 = 11h + 5 min

Train leave town A at:

11h + 5min - ( 3h + 40min ) =

11h - 3 h + 5min - 40 min

5min - 40min = - 35 min

Time cannot be negative, so due to the fact that 1h = 60 min write 11:05 as:

11:05 = 10h + 1h + 5min =

10h + 60min + 5min =

10h + 65min

11h + 5min - ( 3h + 40min ) =

10h + 65min - ( 3h + 40min ) =

10h - 3 h + 65min - 40 min

7h + 25 min

Train leave town A at 7:25 am

Related Questions

THE RAILROAD TRACK BETWEEN TOWN A AND TOWN B IS 500 MILES LONG THE BLUE TRAIN IS SCHEDULED TO LEAVE... A car X left town A for town B at the same time that another car Y left town B for town A, each trav... A train left Lamar's town and traveled for 55 minutes to Danville. Then it traveled 4 hours and 20 m... A train left Jonah's town and traveled for 4 hours and 54 minutes to Lancaster. Then it traveled 3 h...