Question

1-Phyllis invested $13,000, a portion earning a simple interest rate of 5.20%

per year and the rest earning a rate of 5% per year. After one year the total interest earned on these investments was $666.00. How much money did she invest at each rate?

2-Helen earns $7.50 an hour at her job, but if she works more than 35 hours in a week, she is paid 1 1/2

times her regular salary for the overtime hours worked. One week her gross pay was $318.75. How many overtime hours did she work that week?

3-A square plot of land has a building 70 ft long and 30 ft wide at one corner. The rest of the land outside the building forms a parking lot. If the parking lot has area 10,000 ft², what are the dimensions of the entire plot of land?

4-A farmer has a rectangular garden plot surrounded by 200 ft of fence. Find the length and width of the garden if its area is 1600 ft².

Answer 1