29. The following table contains information about an economy that produces only pens and books. The base year is 2003. Year Price of pens Quantity of pens Price of books Quantity of books 2003 $3 100 $10 50 2004 3 120 12 70 2005 4 120 14 70 What is the approximate percentage increase in prices from 2004 to 2005? 13 percent O percent 16 percent d. 38 percent 22 percent a b. e. 30. The following table contains information about an economy that produces only pens and books. The base year is 2003. Year Price of pens Quantity of pens Price of books Quantity of books 2003 $3 100 $10 50 2004 3 120 12 70 2005 4 120 14 70 What is the percentage increase in real GDP from 2004 to 2005? 27 percent b. 7 percent a. d. 32 percent O percent 22 percent e