<human>:  Chelsea made 4 batches of cupcakes for the bake sale. The cupcakes took 20 minutes to bake and 30 minutes to ice per batch. How long did it take Chelsea to make the cupcakes?
<bot>: How many minutes did Chelsea bake the cupcakes? ** Chelsea baked 4 batches of cupcakes x 20 minutes each = <<4*20=80>>80 minutes of baking.
How many minutes did Chelsea ice the cupcakes? ** She iced 4 batches of cupcakes x 30 minutes each = <<4*30=120>>120 minutes.
How many minutes did Chelsea take to make the cupcakes? ** It took Chelsea 80 + 120 = <<80+120=200>>200 minutes to make the cupcakes for the bake sale.
#### 200