Question

a spinner with 6 equally sized slices has 2 red slices, 1 blue slice, and 3 yellow slices. the dial is spun and stops on a slice at random. what is the probability that the dial stops on a red or blue slice?write your answer as a fraction in simplest form.

Explanation:

Step1: Count total slices

Total slices = 2 + 1 + 5 = 8

Step2: Count favorable slices

Favorable (red + blue) = 2 + 1 = 3

Step3: Calculate probability

Probability = $\frac{\text{Favorable slices}}{\text{Total slices}}$ = $\frac{3}{8}$

Step4: Convert to decimal

$\frac{3}{8}$ = 0.375

Answer:

0.375