Question

The probability of the spinner landing on red is equal to ⅕ and the probability it lands on blue is equal to ¼ How many times will it land on green if you spin it 40 times and green is the only other color?

Answer 1

We know that

The probability of red is 1/5.

The probability of blue is 1/4.

Let's add these probabilities

`(1)/(5)+(1)/(4)=(4+5)/(20)=(9)/(20)`

This means the probability of green is the complement fraction 11/20.

Then, we multiply this probability by 40

`(11)/(20)\cdot40=22`

Hence, it will land 22 times on the green.