Which of the following is the average percentage increase in the salary of C during the six years ........

Quantitative Aptitude ( CCS) Line Chart

Following Line graph shows the percentage increase in the salaries of four persons during the years 2003 to 2008 with respect to previous year.

Which of the following is the average percentage increase in the salary of C during the six years?

20%

40%

15%

10%

Explanation :
Average percentage increase in salary of B during 6 years = (10+20+30+10+20+30)/6 = 20%

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