Task: Question Answering
Input (English): Problem: a certain deep blue paint contains 45 percent blue pigment and 55 percent red pigment by weight . a certain green paint contains 35 percent blue pigment and 65 percent yellow pigment . when these paints are mixed to produce a brown paint , the brown paint contains 40 percent blue pigment . if the brown paint weighs 10 grams , then the red pigment contributes how many grams of that weight ? 
Options: a ) 1.5 , b ) 2.5 , c ) 3.5 , d ) 2.75 , e ) 4.5
Output (English): d