My first post... So be nice, or I'll blast you with a phaser... You are at one side of a canyon at the start of a bridge. The only way to cross the canyon is over the bridge. (no tricks to this, just a normal crossing of the bridge, don't try to walk on water here) On you side are 3 gold bars, each weighing 3kg. You weigh 78kg. The bridge can only support 80kg without breaking. How do you get yourself accross with your new found wealth, without falling through the bridge?? --And no, you can't throw it accross.