Tesco In Store Assistant interview questions

I applied online and was invited to a face to face interview. This turned out to be a 2 hour interview process. Firstly, there was a far to face interview with a manager, but I was interviewed with another candidate. We were both asked the same questions, even though I was a school leaver and he was a 50 year old manager of a customer services team. Next, we went on the shop floor, and were asked to talk with customers and pack their shopping. The store was very quiet, and all the candidates were looking for people to help. Finally, there was a team building exercise in which we had to build a 6 foot tower out of paper within 5 minutes. It had to be free standing for a minute, and ecologically sound. There were 6 in the group of all ages.