Ultra Joy and Ultra Dawn are more sudsy, so less is required, maybe 15 or 20 parts water to one part soap. Mix well and allow to sit for a day or so to stabilize. How long a bubble lasts is dependent on how long it can stay wet. Glycerin will slow down the drying time very well. Solutions with glycerin keep better over longer periods of time, but sugar and gelatin are less expensive and one or the other is probably already lying around the kitchen.
Most sources quote solutions within the above ranges.
One significant variation is given by Professor Bubbles , who provides a very serious resource for bubble fans and practitioners. Dip into the bubble solution and gently blow. Drinking straws make fairly good bubble blowers. The resulting tabs should splay out. Tie off the ends to form a loop.