I left my house at 6 : 40 P.M. and arrived at 10 : 20 P.M. How long did the trip take me?
A) 4 hours and 20 minutes
B) 3 hours and 40 minutes
C) 16 hours and 40 minutes
D) 15 hours and 20 minutes
E) 4 hours and 40 minutes

Question

I left my house at 6 : 40 P.M. and arrived at 10 : 20 P.M. How long did the trip take me? ​
A) 4 hours and 20 minutes
B) 3 hours and 40 minutes
C) 16 hours and 40 minutes
D) 15 hours and 20 minutes
E) 4 hours and 40 minutes

Quizplus · Accepted Answer

To find the duration of the trip, we need to subtract the departure time from the arrival time. 
The minutes place is easy to subtract (20-40=-20), so we borrow an hour from the 10 and add 60 minutes to the minutes place (60-20=40). Now we have:

10:20 PM
-6:40 PM
--------
 3:40

So the trip took 3 hours and 40 minutes, which is choice B.

I Left My House at 6 : 40 P