I missed this question on a quiz. I took the total prices of 2010 (19) minus the total prices of 2009 which is a variance of 4, and divided by the total prices of 2009 (15). I got 26.6%, which was the wrong answer. Can you assist?

Question 9(Worth 1 points)

Good/Service

Quantity

2009 Unit Price

2010 Unit Price

Lettuce2

$3.00

$1.00

Bread3

$2.00

$3.00

T-shirts4

$10.00

$15.00

Between 2009 and 2010, the CPI

increased by 26.7 percent.

increased by 36.5 percent.

increased by 73.2 percent.

decreased by 36.5 percent.

decreased by 26.7 percent.

Points earned on this question:0