Hi talaangoshtari,
Based on the information in the pie chart, we do NOT know the exact price of any of the pieces - we only know the PERCENT of the TOTAL EXPENDITURES that each piece represents. Since we don't know the total expenditures, we have no way of calculating "how much less" one piece is compared to another (this is why I mentioned in my prior post that the question was 'poorly-phrased').
For example,
IF....the total expenditures = $100...
Printing = $20
Royalty = $15
Royalty is 20-15 = $5 less
IF....the total expenditures = $200...
Printing = $40
Royalty = $30
Royalty is 40-30 = $10 less
As the total expenditures change, the 'absolute' difference in Printing and Royalty changes.
If the question had asked "what is the difference in the percent of expenses devoted to Printing and the percent of expenses devoted to Royalty?", then the answer would be 5%, but that's NOT how this question was written.
GMAT assassins aren't born, they're made,
Rich