Suppose an Increase in Price Decreases Quantity Demanded from 210

question 105

Multiple Choice

Suppose an increase in price decreases quantity demanded from 210 to 190 units. Using the mid-point formula, what is the percentage change in quantity demanded?

• A) 2 = 200 percent
• B) −0.2 = −20 percent
• C) 0.2 = 20 percent
• D) −0.1 = −10 percent