Answer
New consumer surplus: -3
Work Step by Step
Since the new equilibrium price is $11, the consumer surplus for
Bob: 13 -11 = 2
Barb: 12 - 11 = 1
Bill: 11 - 11 = 0
Bart: 10 - 11 = -1
Brent: 9 - 11 = -2
Betty: 8 - 11 = -3
Total consumer surplus:
2 + 1 + 0 + (-1) + (-2) + (-3) = -3
