### Mathematics in Investing Rate

Hi can some help me with the below questions? 1. What does 200% mean? If you have a job making $5 an hour and you receiva a 200% raise how much will you be making after the 200% raise? 2.Is is better to invest your money where it will earn interest at a rate of 7% per year or to invest it where it will be multiplied by 2/3