Question

3 hours 38 minutes 13 second + 4 hours 23 minutes 28 second + 8 hours 11 minutes 27 second​

Answer 1

1. Answer:   16 hours 13 minutes 8 seconds   Step-by-step explanation:   1st step:   Hour                   Minute                Seconds   3.                          38.                         13 4.                          23.                         28 8.                           11.                          27 ———————————————————————— 15hours.              72minutes.            68seconds     2nd step: there are 60 minutes in an hour So, the 60 minutes will be transferred to the hour section and on 12 minutes will remain----- 16 hours 12 minutes and 68 seconds   3rd step:  There are 60 seconds in a minute  So, there are 8 extra seconds which will stay in the same place and the 60 seconds will be transferred to the minute section  -----16 hours 13 minutes and 8 seconds