To determine pasta cook time: Take the lowest time listen on the box, divide in half, then subtract 2 minutes. For example, if a box says 8-10 minutes you will take the lower number (8 minutes) and divide in half to get 4 minutes. Subtract 2 minutes = 2 minutes cook time. For odd numbers I round down to the nearest even number. For a cook time of 7-9 minutes, reduce 7 minutes to the nearest even number (6 minutes). Divide 6 minutes in half to get 3 minutes. Subtract 2 minutes = 1 minute total cook time.