Question

A spinner is divided into 12 equal sections. Four sections are red, two sections are green, five sections are blue, and one section is white. The arrow on the spinner is spun one time. What is the probability that the arrow will land on either blue or green? Express the probability as a fraction in simplest form.

Answer 1

Answer: 7/12

Explanation:

When word problems for probability say "or," this means you add the probabilities of the two things occurring. Green is a 2/12 chance and Blue is a 5/12 chance. Added together, you get a 7/12 chance that the arrow will land on either blue or green.

Answer 2

7/12 because the probability formula is the number of desired outcomes over the number of possible outcomes.