Question

What is the probability of getting either blue or green on a spinner that is 3/10 greens and 1/5 blue?

Answer 1

1/2 or 0.50

Explanation:

To find the probability of getting either blue or green on a spinner, we must add both probabilities together.

`(3)/(10)+(1)/(5) = ?`

To make adding our two fractions easier, we need to make sure they have like denominators.

`(1*2)/(5*2) =(2)/(10)`

Now that the denominators of our probabilities are the same, we can add them together to get our answer.

`(3)/(10) +(2)/(10)=(5)/(10)`

`(5)/(10) =(1)/(2)` or
`0.50`