1. There are 25 students in the school art group, and the singing group is more than the art group 17. How many people are there in the two groups?

My mother is 32 years old, 24 years older than Cong Cong. How old is Cong Cong?

3. A rope is folded in half, and then folded in half. Each section is 5 meters. How long is this rope?

4. A piece of cloth is 60 meters, cut 5 meters at a time, cut 9 times, how many meters are left?

5. The school bought/kloc-0 football with 20 yuan, and 29 yuan bought a basketball. How much is a basketball more expensive than a football?