document.write( "Question 769098: the proportion of black paint to pink paint is 2:7. how much black paint is used if 21 liters of pink paint is used? \n" ); document.write( "
Algebra.Com's Answer #468720 by Cromlix(4381)    You can put this solution on YOUR website! Black paint to Pink paint \n" ); document.write( "2:7 \n" ); document.write( "21 litres of pink paint \n" ); document.write( "21/7 = 3 \n" ); document.write( "So, 3*2 = 6 litres of black paint. \n" ); document.write( "Hope this helps. \n" ); document.write( ":-) \n" ); document.write( "  |