Question

julia is putting together bag of 45 blocks. if she wants the probability of choosing a red block to be 1/5 how many red blocks julia put in the bag?

Answer 1

9

Explanation:

Given that the sample size is 45 blocks

Let number of red blocks in the bag to be x

Then the probability of chosing a red block will be x/45

Given that the probability of choosing a red block is 1/5 then you can form the expression;

x/45 = 1/5 ---------------find the value of x by performing cross multiplication

5x=45*1

5x/5=45/5

x=9

Answer

Julia put 9 red blocks in the bag.