Page 4 - PPT 8
P. 4
➢ 42 hours 67 minutes 74 seconds
= 42 hours + 67 minutes +74 seconds
= 42 hours + (60 minutes + 7 minutes) +
(60 seconds + 14 seconds)
= 42 hours + 1 hour + 7 minutes + 1
minutes + 11 seconds + 14 seconds
= 43 hours 8 minutes 14 seconds
