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Study the graph to answer these questions.
The graph below shows sales of different colour of Brand-X refrigerator for the year 2009, 2010 and 2011.
Brand-X: Sales volume by colour of refrigrator(in '000s)

Over the given three years which has been the highest selling colour; and what percentage of volume did it account for?
Sales of red colour refrigerator in all the given years in thousands = (20 + 30 + 45) = 95
Sales of Blue colour refrigerator in all the given years in thousands = (25 + 32 + 48) = 105
Sales of Lemon colour refrigerator in all the given years in thousands = (47 + 23 + 32) = 102
Sales of Grey colour refrigerator in all the given years in thousands = (2 + 27 + 34) = 63
Sales of White colour refrigerator in all the given years in thousands = (32 + 45 + 43) = 120
Highest selling colour is white. Percentage of volume it accounted for, is given by,
Required percentage = $$\frac{120}{95 + 105 + 102 + 63 + 120} \times 100$$
= $$\frac{12000}{485} = 25$$% (approx)
Hence, option B is the correct answer.
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