72 (years) * 365.25 (there are 365 days in a year but every fourth year is a leap year) * 24 (hours per day) * 60 (minute per hour = 37869120 minutes There could be one day more or less depending on which years and the starting dates... One day has 1440 minutes.
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60 minutes in an hour 60 x 24 = 1,440 minutes in a day 1,440 x 365 = 525,600 minutes in a year 525,600 x 72 = 37,843,200 minutes in 72 years but wait - every 4th year is a leap year 72/4 = 18 leap years (each with one extra day) 18 x 1,440 = 25,920 extra minutes 37,843,200 + 25,920 = 37,869,120 37,869,120 minutes in 72 years. The boys who run the Navy's atomic clocks might quibble, but that is the answer based on my wristwatch!
72 minutes.
4,320 minutes.
72 seconds is 1 minute and 12 seconds or 1.2 minutes.
4,375 minutes = 72 hours 55 minutes.