The following bar graph shows the sales (in lakh number of packs) of five cosmetic products by a company between 2004 and 2009. Study the bar graph and answer the question based on it.

Reference: Sales (in lakh number of packs) of five different products of Cosmetic company during 2004 and 2009 = Sales (in lakh number of packs) of five different products of Cosmetic company during 2004 and 2009 = Sales (in lakh number of packs) Cosmetic products, Lipsticks, Nail Art, Hair color, Eye-liners, Mascara

What is the percentage increase (rounded off to the nearest integer) in the average sales of all cosmetic products together in 2009 as compared to 2004?

Correct option is B

Solution:
Total Sale in 2004 = 50 + 40 + 65+ 90 + 80 = 325 

Average = $$\frac{325}{5}$$ = 65

Total Sale in 2009 = 75+ 80+ 75+ 98+ 95= 423

Average =$$\frac{423}{5}$$​ = 84.6 

Required Percentage = $$\frac{84.6-65}{65}\times100 = 30.15{\%} \,or \,30 {\%}$$​​