Question

look at the spinner below. if you want there to be a probability of 0.25 of landing on yellow in one spin, how many sections should you colour yellow?

Explanation:

Step1: Recall probability formula

The probability formula for a spinner is $P=\frac{\text{Number of favorable outcomes}}{\text{Total number of outcomes}}$. Let the total number of sections be $n = 4$ (since the spinner is divided into 4 equal - sized sections), and the number of yellow - colored sections be $x$. The probability $P = 0.25$.

Step2: Substitute into formula

We have $0.25=\frac{x}{4}$.

Step3: Solve for $x$

Multiply both sides of the equation by 4: $x=0.25\times4$.
$x = 1$.

Answer:

1