Question

The gardener mixed up the petunias he bought at the plant shop. None of them are blooming, but he knows he bought 10 purple, 9 red, and 11 white,. if he just selects one at random, what is the probability that it is red?

Answer 1

Since there are 30 petunias, the chance of getting the red ones can be calculated like this 9/30 (the chance of getting 9 red petunias out of 30). this gives 0.3 Then you multiply it by 100. it gives 30%. here is the solution formally.
9/30 = 0.3
0.3*100 = 30%