You invested $10,000 in two accounts paying 8% and 10% annual interest. At the end of the...

You invested $10,000 in two accounts paying 8% and 10% annual interest. At the end of the year, the total interest from these investments was $940. How much was invested at each rate?

The percentage of average-looking men exceeds the percentage of strikingly attractive men by 57. The percentage of good-looking men exceeds the percentage of strikingly attractive men by 25. A total of 88% of American men range between average looking, good-looking, and strikingly attractive. Find the percentage of men who fall within each of these three categories of looks.