Answer: B
Explanation:
1.) Calculate the percentage that blue balls make of the bag. First, add the balls together.
5 + 4 + 3 = 12
2.) Divide 100 / 12.
100 / 12 ≈ 8.3
3.) Multiply 8.3 by the number of blue balls.
8.3 * 5 ≈ 40
4.) Convert the percentage to decimal form.
40 / 100 = 0.4