1. If the original price is 125 and the rate of discount is 25%, what is the amount of discount? sale price?
2. Jim, a sales agent, has an income of 30,000 and receives a commission of 5% on all sales above 75,000. If his basic salary is 13,500, what is his total sales?
3. Three years ago, Ruby borrowed 12,000. If she paid back 15,200, what was the rate of simple interest?
