Study the following graph carefully & answer the questions given below:
Three different products (in thousands) produced by a company in five different years
What is the difference between the total number of Pen-drives and CDs produced by the company together in the year 2008 and the number of Key boards produced by the company in the year 2006?
40000
The difference between the total number of Pendrives and CDs produced by the company together in the year 2008 and the number of Key boards produced by the company in the year 2006=(30+25−15)×1000=40000