the time is 2:10 P.M. what is the time that is 7 hours and 20 minutes before the time shown

Question

the time is 2:10 P.M. what is the time that is 7 hours and 20 minutes before the time shown

Answer 1

2:10 pm -  2 hours = 12:10 pm

 

12:10 pm - 5 hours = 7:10 am

 

7:10 am - 20 mins = 6:50 am

Answer 2

Subtract with borrowing:

      2:10 PM

   -  7:20

 - - - - - - - - -

 

Borrow an hour (60 minutes) since you can't subtract 20 from 10:

      1:70 PM

   -  7:20

 - - - - - - - - -

 

Borrow 12 hours (PM to AM) since you can't subtract 7 from 1:

      13:70 AM

    -  7:20

 - - - - - - - - - -

       6:50 AM