Respuesta :
The percentage increase in the total sales for 2006 is 15% while the increase in sales of the trench coats is 23.3%; therefore the percentage increase in total sales of trench coats is 8.3% faster.
Computation:
1. The total amount of sales for 2006 and 2007:
[tex]\begin{aligned}\text{Sales of 2006}&=103+297+210+213+137\\&=960\end{aligned}[/tex]
[tex]\begin{aligned}\text{Sales of 2007}&=127+223+210+285+259\\&=1104\end{aligned}[/tex]
2. Now, the percentage increase will be determined for the total number of coats and trench coats:
For the total number of coats, the values used will be the total sales of 2006, and total sales of 2007.
[tex]\begin{aligned}\text{Percentage Increase}&=\dfrac{\text{Sales of 2007}-\text{Sales of 2006}}{\text{Sales of 2006}}\times100\\&=\dfrac{1104-960}{960}\times100\\&=15\%\end{aligned}[/tex]
For the trench coats the values used will be the sale of trench coats in 2006 and 2007.
[tex]\begin{aligned}\text{Percentage Increase in Sale of Trench Coat}&=\dfrac{\text{Sales of 2007}-\text{Sales of 2006}}{\text{Sales of 2006}}\times100\\&=\dfrac{127-103}{103}\times100\\&=23.33\%\end{aligned}[/tex]
3. Now, the net percentage increase in sales due to the trench coats is computed as follows:
[tex]\begin{aligned}\text{Net Percentage Change}&=\text{\text{Percentage Increase in Trench Coat}-\text{Percentage Increase}}\\&=23.33\%-15\%\\&=8.3\%\end{aligned}[/tex]
Therefore, the correct option is option B. Sales of trench coats increased 8. 3 percentage points faster than total coat sales.
To know more about percentages of increase in sales, refer to the link:
https://brainly.com/question/45525