Find the LCM (in this case, it's 12) 8/12 red 3/12 yellow Make 3/12 a full quart by multiplying by 4 3/12 x 4/1 = 1 Since you multiplied 3/12 with 4, do the same with red 8/12 x 4/1 SIMPLIFY TO MAKE EASIER 8/3 x 1 You use 2 2/3 quarts of red paint for every quart of yellow paint