A number is first increased by 20
- A number is first increased by 20 and then decreased by 20
- A number is first increased by 20 and then decreased by 15
- A number is first increased by 20 and then decreased by 10
- A number is first increased by 20 percent
- A number is first increased by 10 and then increased by 20
- A number is first increased by 25 and then decreased by 20
- A number of
- A number is first increased by 25