Mario had 9green, 8 red, 10 brown, 6 orange and 9 blue m&m's what percent is blue

21.423%

Step-by-step explanation:

First, add all of the m&ms together to find the total:

9+8+10+6+9=42

Since you have 9 blues and there is a total of 42, the ratio in fraction form is 9/42.

Divide the numbers to get the decimal, which is approximately 0.2143.

Multiply that by 100:

0.2143x100=21.423%