A bag contains 8 green M&Ms, 12 blue M&Ms, and 2 orange M&Ms. What is the probability of choosing a green M&M, eating it, and then choosing a blue M&M?

Please help me this is turn in tomorrow please.

When rates are expressed as a quantity of 1, such as 2 feet per second or 5 miles per hour, they are called unit rates. if you have a multiple-unit rate such as 120 students for every 3 buses, and want to find the single-unit rate, write a ratio equal to the multiple-unit rate with 1 as the second term.

21, i'm pretty sure it's right lol