Hi, if a spinner is 3/10 green and 1/5 blue, is the probability of spinning a green or blue 1/2?
yes
sad
To determine the probability of spinning a green or blue on the spinner, you need to add the probabilities of spinning green and blue together.
First, let's find the probability of spinning green. The spinner is 3/10 green, which means there are 3 equally likely green sections out of a total of 10 sections. So, the probability of spinning green is 3/10.
Next, let's find the probability of spinning blue. The spinner is 1/5 blue, which means there is 1 equally likely blue section out of a total of 5 sections. So, the probability of spinning blue is 1/5.
To find the probability of spinning green or blue, you need to add the probabilities of spinning green and blue:
P(green or blue) = P(green) + P(blue)
= 3/10 + 1/5
To add these fractions, you need a common denominator. The least common multiple of 10 and 5 is 10. So, you can convert both fractions to have a denominator of 10:
P(green or blue) = (3/10) + (2/10)
= 5/10
The fraction 5/10 is equivalent to 1/2 when simplified because both the numerator and denominator can be divided by 5:
P(green or blue) = 1/2
Therefore, the probability of spinning a green or blue on the spinner is 1/2.