due ASAP homework question

Conduct a vertical analysis by expressing each line as a percentage of total revenues. (Round percentage values to 1 decimal place.)

             2010   2009

Amount Percentage Amount Percentage

Total Revenues                        $275   $228      

Cost of crude oli and products  $120  $102

Other operating cost                 $61     $55

Income before income text       $94       $71

Income Tax expense                $41       $22

Net income                                $53       $49