The price per pound of iceberg lettuce has fluctuated quite a bit over the last few years. Here it is in dollars, from 2004 to 2012:

In which of these years was the Iceberg Lettuce Index Number (2004 = 100) equal to 114.4?
A) 2005
B) 2007
C) 2009
D) 2011
E) 2012

Question

The price per pound of iceberg lettuce has fluctuated quite a bit over the last few years. Here it is in dollars, from 2004 to 2012:

In which of these years was the Iceberg Lettuce Index Number (2004 = 100) equal to 114.4?
A) 2005 
B) 2007 
C) 2009 
D) 2011 
E) 2012

Quizplus · Accepted Answer

To find the year in which the Iceberg Lettuce Index Number (2004 = 100) was equal to 114.4, we need to use the given index numbers in the chart.

We can calculate the index number for each year by dividing the price per pound by the price in 2004 and multiplying by 100.

Let's calculate the index numbers for each year:

2004: 100 (by definition)
2005: (1.08/1.06) x 100 = 101.89
2006: (0.78/1.06) x 100 = 73.58
2007: (1.45/1.06) x 100 = 136.79
2008: (0.72/1.06) x 100 = 67.92
2009: (1.14/1.06) x 100 = 107.55
2010: (1.06/1.06) x 100 = 100
2011: (1.05/1.06) x 100 = 98.11
2012: (0.82/1.06) x 100 = 77.36

We can see that the index number was equal to 114.4 only in 2009. Therefore, the answer is C) 2009.

The Price Per Pound of Iceberg Lettuce Has Fluctuated Quite