Dear skah-uh,

I think you have to decide your risk tolerance on this one and if you think you can achieve the A in both classes or not. It is certainly not a deal breaker for business schools if you earn a B in a quant class. Obviously an A is best, but a B is still quite good.

If the course is interfering with your performance in all of your courses, then it might be worth considering a withdrawl as you don't want to bring down your overall GPA. A W is not going to be a deal breaker either. However, you should understand that many admissions folks will assume you withdrew from the class because you were failing it--not because you were making a B. In the big scheme of things, neither a W nor one B will have a large impact on your admissions decisions....but I would rather take the B and be done with the class then take the W and repeat it. That's just my two cents...

Good luck,
Lisa