Question

There are blue, red and yellow marbles in a bag. The probability of choosing a blue marble is 1/8, and the probability of choosing a red marble is 1/2. What is the probability of choosing a yellow marble?

Answer 1

3/8

Explanation:

So what I did is make 1/2 have a common denominator with 1/8. The common denominator would be 4/8. Then i added 1/8 and 4/8 and got 5/8. Then I subtracted 5/8 and 8/8 because 8/8 would be the 100% chance. Then I got 3/8. So I would then think the chance of getting a yellow marble would be 3/8 chance. I hope I helped :)