Answer:
The fraction of the pencils that are red is 4/10. The fraction of the pencils that are black is 6/10.
Explanation:
[I can't draw you a model but I reccomend that when you do, you seperate it into 10 pieces and mark 4 as red pencils and 6 as black pencils. You could also simplify 4/10 to 2/5 and 6/10 to 3/5, but instead you'd seperate the model into 5 pieces and mark 2 as red pencils and 3 as black pencils.]
First, let's add this up so we have our denominator.
4 + 6 = 10.
Now that we know that the denominator is 10, we apply it to the question.
The box has 4/10 red pencils and 6/10 black pencils.
The box has 4/10 red pencils and 6/10 black pencils.If you were to simplify, it'd be 2/5 red pencils and 3/5 black pencils.