1 minute and 30 seconds is 1.5 minutes.
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It is 30/60 or 1/2 simplified
1 minute and 30 seconds
One minute is a whole, so that's what gives you the 1 in 1.75There are 60 seconds in one minute, and 45 seconds is 3/4 of that. 3/4 is 0.75 in decimal. 1 minute + 0.75 minutes = 1.75 minutes.
1.6381666... minutes
3:30 - 1:38 = 1:52 or 1 minute and 52 seconds or 112 seconds