Answer: Sales of jackets increased 18.8 percentage points faster than total coat sales.
Explanation:
From the given pie-charts, Sales of jackets in 2006=213
Sales of jackets in 2007= 285

The percentage increase in sale of jacket =


Total sales in 2006=

Total sales in 2007=


bbb
The percentage increase in total coat's sales =


Clearly, 33.8 >15
Hence, the percentage increase in sales of jackets is greater than percentage increase in the total coat's sales.
Difference in percent of total coats sales and jackets sales =

Hence, Sales of jackets increased 18.8 percentage points faster than total coat sales.