What is the approximate percent increase in the number of units sold by Company E in the year 2007 f...........

Quantitative Aptitiude (CLAT) Data Interpretation

Answer the questions based on the information given in the following table. A, B, C, D, E denote companies and 2006, 2007, 2008, 2009, & 2010 denote years.
Number of Units Manufactured (M) and Number of Units Sold (S) (in hundreds) by five different companies over the years.

What is the approximate percent increase in the number of units sold by Company E in the year 2007 from the previous year?

Explanation:

Company E's sold in 2006 = 140
Company E's sold in 2007 = 170
Increase in the number of units sold by Company E = 170 - 140 = 30
Increase percentage w.r.t. previous year = (30/140)*100 = 21.4%
Approximate % = 21%