human
Roy has 2 blue pens. He has twice as many black and 2 less than twice as many red than black pens. How many pens does Roy have in all?
assistant
How many black pens does Roy have? ** Roy has 2 x 2 = <<2*2=4>>4 black pens.
How many black pens does Roy have? ** Twice the number of black pens is 4 x 2 = <<4*2=8>>8.
How many red pens does Roy have? ** So, there are 8 - 2 = <<8-2=6>>6 red pens.
How many pens does Roy have in all? ** Therefore, Roy has 2 + 6 + 4 = <<2+6+4=12>>12 pens in all.
#### 12