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?
How many red beads does Betty have? ** Betty has 30/3 = <<30/3=10>>10 sets of 3 red beads.
How many blue beads does Betty have? ** So, she has 10 x 2 = <<10*2=20>>20 blue beads.
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