Rick can iron 4 dress shirts in an hour.  He can iron 3 dress pants in an hour.  If he spends 3 hours ironing dress shirts and 5 hours ironing dress pants, how many pieces of clothing has he ironed?
Rick has ironed 4 x 3 = <<4*3=12>>12 dress shirts.
He has ironed 3 x 5 = <<3*5=15>>15 dress pants.
In total, he has ironed 12 + 15 = <<12+15=27>>27 pieces of clothes.
#### 27