1. The problem statement, all variables and given/known data So, my professor gave a test this weekend. I missed a problem concerning price elasticity of demand, but that's only because I assumed the opposite direction. Now, I'm considering challenging this question, because the price elasticity was listed as a positive number. 2. Relevant equations Ep = (delta-Q)/(delta-P)*(P/Q) 3. The attempt at a solution I realize that most goods have a negative elasticity. BUT, that negative wasn't represented in this question. Thus I said it would lead to an increase. By definition of the formula, it should've been negative. Correct??