I was very confused by this too and finally realized the mistake. The chain of logic went like this: > There are 2.4 standard hours in 1 metric hour > Therefor

I was very confused by this too and finally realized the mistake. The chain of logic went like this: > There are 2.4 standard hours in 1 metric hour > Therefore there are 240 standard minutes in 1 metric hour > Then divide by 100 to get 2.4 standard minutes per metric minute Except there aren't 240 standard minutes in 1 metric hour. There's 2.4 * 60 = 144. That the author of the page couldn't keep the conversions straight does not bode well if we were to switch as a society...