mr. wells always buys a big container of erasers before school starts each year. on the first day of school…

mr. wells always buys a big container of erasers before school starts each year. on the first day of school, he gives each of his students an eraser he has randomly chosen from the container. school started today, and so far he has handed out 3 blue, 5 yellow, 4 purple, 2 red, and 7 green erasers. based on the data, what is the probability that the next eraser mr. wells hands out will be blue? write your answer as a fraction or whole number.

mr. wells always buys a big container of erasers before school starts each year. on the first day of school, he gives each of his students an eraser he has randomly chosen from the container. school started today, and so far he has handed out 3 blue, 5 yellow, 4 purple, 2 red, and 7 green erasers. based on the data, what is the probability that the next eraser mr. wells hands out will be blue? write your answer as a fraction or whole number.

Answer

Explanation:

Step1: Calculate total number of erasers handed out

$3 + 5+4 + 2+7=21$

Step2: Calculate probability of blue eraser

The number of blue erasers is 3. Probability = $\frac{\text{Number of favorable outcomes}}{\text{Total number of outcomes}}$, so the probability of a blue eraser is $\frac{3}{21}=\frac{1}{7}$

Answer:

$\frac{1}{7}$