The Henson family cleaned out all their drawers. They found 47 black pens and 39 blue pens. They als

The Henson family cleaned out all their drawers. They found 47 black pens and 39 blue pens. They also found 6 pens in other colors. How many pens did they find in all?

The phrase in all means we add, so we have:
Total pens = Black Pens + Blue Pens + Other color pens
Total pens = 47 + 39 + 6
Total pens = 92