Hi All,
This question is "detail-heavy" and oddly-worded (we're meant to infer some details that the writer isn't perfectly clear about; the fact that 3 different users have provided 3 different answers is interesting too), but I think the "intent" of the question is this:
We're told that a $16 million construction budget is meant to be spread EVENLY over the course of 4 years. This obviously means $4 million per year, BUT I think that we're expected to take that logic further....
Next, we're told that HALFWAY through the 2ND YEAR, the amount spend was $10 million. I think that we're meant to assume that $4 million per year is meant to be spent EVENLY throughout EACH year. If this is true, then halfway through the 2nd year = 1.5 years. In that 1.5 years, we should have spent $6 million; the prompt says that we've spent $10 million, so we're $4 million OVER-BUDGET at that point in time.
We're asked " In order to finish the project on budget, the amount spent on the rest of the wing must be how much UNDER the projection for the ENTIRE four-year construction period?"
Since we're $4 million OVER-BUDGET after 1.5 years, if we want to finish the project ON BUDGET, then the rest of the work needs to be $4 million UNDER BUDGET.
Final Answer:
GMAT assassins aren't born, they're made,
Rich