this is an 11×11 cryptic crossword in which each clue contains only one device. You can reveal said device while solving the puzzle if you need a little help. It’s easier than most UK crosswords and harder than a lot of North American ones, and intended as a bridge for solvers...
the key in figuring out the EAC is to analyze WHY it is over budget or behind schedule. This will give you the clue as to which formula to use. I’ll give some examples after explaining