4 blue, 3 red
twice as many black pens as blue pens.....black pens = 2(4) = 8
so there are : (4 + 3 + 8) = 15 total pens
fraction of blue pens to total pens = 4/15
45 is the answerrrrrrrrrrrrrr!!!!
Can you give us a picture of the question or is it a word problem
