If you can split weight between everyone's packs while hiking, do it. One of the best ways to do that, for example, is by having one person carry the tent, another carry the stove, and a third person carry the food.
Not everyone has a 3-person tent, however. But this might be your chance to score one for cheap. Right now at REI Outlet, you can get the Hylo 3 Tent by Mountain Hardwear for only $173 -- half off of its original price of $349.
With a minimum trail weight of 4 pounds and 7 ounces, a high ceiling and a large vestibule, this is a great three-season option for groups of backpackers who want to cut overall pack weight while not sacrificing comfort.