Below is an instruction that describes a task. Write a response that appropriately completes the request in English. Please answer in English.

### Instruction:
Betty has 3 red beads for every 2 blue beads that she has. How many blue beads does Betty have if she has 30 red beads?

### Response:
Betty has 30/3 = 10 sets of 3 red beads.
So, she has 10 x 2 = <<30/3*2=20>>20 blue beads.
#### 20