The pie chart below shows the distribution (in degrees) of the total number of bookshelves manufactured by five companies P, Q, R, S, and T. The table...
Question
The pie chart below shows the distribution (in degrees) of the total number of bookshelves manufactured by five companies P, Q, R, S, and T. The table shows the percentage distribution of unsold bookshelves for each company.
| Company | Percentage of Unsold Bookshelves |
|---|---|
| P | 3X% |
| Q | 12% |
| R | 4X% |
| S | 20% |
| T | 40% |
Additional information:

Given the above, find the difference between the number of sold bookshelves of company Q and the average number of sold bookshelves of companies S and T.