management 2019s discussion and analysis of increased volumes in our performance and applied coatings , optical and specialty materials and glass reportable business segments was offset by volume declines in the commodity chemicals reportable business segment . the volume decline in the commodity chemicals reportable business segment was due in part to lost sales resulting from the impact of hurricane rita , as discussed below . cost of sales as a percentage of sales increased to 63.5% ( 63.5 % ) as compared to 63.1% ( 63.1 % ) in 2004 . inflation , including higher coatings raw material costs and higher energy costs in our commodity chemicals and glass reportable business segments increased our cost of sales . selling , general and administrative expense declined slightly as a percentage of sales to 17.4% ( 17.4 % ) despite increasing by $ 56 million in 2005 . these costs increased primarily due to increased advertising in our optical products operating segment and higher expenses due to store expansions in our architectural coatings operating segment . interest expense declined $ 9 million in 2005 , reflecting the year over year reduction in the outstanding debt balance of $ 80 million . other charges increased $ 284 million in 2005 primarily due to pretax charges of $ 132 million related to the marvin legal settlement , net of $ 18 million in insurance recoveries , $ 61 million for the federal glass class action antitrust legal settlement , $ 34 million of direct costs related to the impact of hurricanes rita and katrina , $ 27 million for an asset impairment charge in our fine chemicals operating segment , $ 19 million for debt refinancing costs and an increase of $ 12 million for environmental remediation costs . net income and earnings per share 2013 assuming dilution for 2005 were $ 596 million and $ 3.49 respectively , compared to $ 683 million and $ 3.95 , respectively , for 2004 . net income in 2005 included aftertax charges of $ 117 million , or 68 cents a share , for legal settlements net of insurance ; $ 21 million , or 12 cents a share for direct costs related to the impact of hurricanes katrina and rita ; $ 17 million , or 10 cents a share related to an asset impairment charge related to our fine chemicals business ; and $ 12 million , or 7 cents a share , for debt refinancing costs . the legal settlements net of insurance include aftertax charges of $ 80 million for the marvin legal settlement , net of insurance recoveries , and $ 37 million for the impact of the federal glass class action antitrust legal settlement . net income for 2005 and 2004 included an aftertax charge of $ 13 million , or 8 cents a share , and $ 19 million , or 11 cents a share , respectively , to reflect the net increase in the current value of the company 2019s obligation relating to asbestos claims under the ppg settlement arrangement . results of reportable business segments net sales segment income ( millions ) 2005 2004 2005 2004 industrial coatings $ 2921 $ 2818 $ 284 $ 338 performance and applied coatings 2668 2478 464 451 optical and specialty materials 867 805 158 186 .

net sales 2005 (1): industrial coatings: 2921
performance and applied coatings: 2668
optical and specialty materials: 867
commodity chemicals: 1531
glass: 2214
net sales 2004: industrial coatings: 2818
performance and applied coatings: 2478
optical and specialty materials: 805
commodity chemicals: 1229
glass: 2183
net sales 2005 (2): industrial coatings: 284
performance and applied coatings: 464
optical and specialty materials: 158
commodity chemicals: 313
glass: 123
2004: industrial coatings: 338
performance and applied coatings: 451
optical and specialty materials: 186
commodity chemicals: 113
glass: 166

sales of industrial coatings increased $ 103 million or 4% ( 4 % ) in 2005 . sales increased 2% ( 2 % ) due to higher selling prices in our industrial and packaging coatings businesses and 2% ( 2 % ) due to the positive effects of foreign currency translation . volume was flat year over year as increased volume in automotive coatings was offset by lower volume in industrial and packaging coatings . segment income decreased $ 54 million in 2005 . the decrease in segment income was due to the adverse impact of inflation , including raw materials costs increases of about $ 170 million , which more than offset the benefits of higher selling prices , improved sales margin mix , formula cost reductions , lower manufacturing costs and higher other income . performance and applied coatings sales increased $ 190 million or 8% ( 8 % ) in 2005 . sales increased 4% ( 4 % ) due to higher selling prices in all three operating segments , 3% ( 3 % ) due to increased volumes as increases in our aerospace and architectural coatings businesses exceeded volume declines in automotive refinish , and 1% ( 1 % ) due to the positive effects of foreign currency translation . performance and applied coatings segment income increased $ 13 million in 2005 . segment income increased due to the impact of increased sales volumes described above and higher other income , which combined to offset the negative impacts of higher overhead costs to support the growth in these businesses , particularly in the architectural coatings business , and higher manufacturing costs . the impact of higher selling prices fully offset the adverse impact of inflation , including raw materials cost increases of about $ 75 million . optical and specialty materials sales increased $ 62 million or 8% ( 8 % ) . sales increased 8% ( 8 % ) due to higher sales volumes in our optical products and silica businesses , which offset lower sales volumes in our fine chemicals business . sales increased 1% ( 1 % ) due to an acquisition in our optical products business and decreased 1% ( 1 % ) due to lower pricing . segment income decreased $ 28 million . the primary factor decreasing segment income was the $ 27 million impairment charge related to our fine chemicals business . the impact of higher sales volumes described above was offset by higher inflation , including increased energy costs ; lower selling prices ; increased overhead costs in our optical products business to support growth 24 2006 ppg annual report and form 10-k 4282_txt .

Questions:
in 2005, how much did the income represent in relation to the net sales for the industrial coatings segment?
and how much did it represent for the performance and applied coatings segment?

Answers:
9.7%
17.4%