Question

a spinner with 12 equally sized slices has 5 red slices, 3 yellow slices, and 4 blue slices. the dial is spun and stops on a slice at random. what is the probability that the dial stops on a red slice?
write your answer as a fraction in simplest form.

Explanation:

Step1: Calculate total number of slices

Total slices = 12

Step2: Calculate number of favorable outcomes

Number of red slices = 5

Step3: Use probability formula

Probability = $\frac{\text{Number of favorable outcomes}}{\text{Total number of outcomes}}=\frac{5}{12}$

Answer:

$\frac{5}{12}$