Why do ice trays always come in twos?

Question

Hi. It's probably a stupid question but i was just wondering why ice trays are always sold in sets of two? I really have never seen just one ice tray. Why is this?

Answer 1

So you can have a supply of ice while the just-refilled one is put back into the freezer.

Answer 2

Who the heck knows what marketers are thinking...same as this one...why do hot dogs come 10 to the package and the buns only 8 ???????????????