Conditional Currency
Cell A1 has the number of hrs I have flew in the past two months. In order to
maintain my currency I must fly at least 30 hrs in any 3 months period.
Should I attain the 30 hrs or more in the past two months, I would like cell
B1 to read 0. If I still require hours to maintain my currency within the
last month, I would like the actual figure to be displayed in cell B1. Can
anyone help me out with this one?
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