There are 8 red, 5 blue, and 2 green marbles in a hat. Without looking, what is the probability of picking a blue marble?

1 / 3

Step-by-step explanation:

Probability can be represented as the amount of desirable outcomes divided by the total number of outcomes.

Because there are 8 + 5 + 2 marbles or 15, it would the total number of outcomes.

The desirable outcomes can be represented as blue marbles, which there are 5 of.

Using this and the formula above, the probability for picking a blue marble is 5 / 15 which simplifies to 1 / 3.

the ratio of grapes to blueberries she should use is 12: 3

step-by-step explanation:

if mandie is making 15 cups of fruit salad, the ratio of grapes to blueberries she should use is 12: 3.