$60,000 was invested for a year. part of it earned simple annual interest at x percent per yr, and the rest earned simple annual int. at y percent per yr. if the total interest earned by the 60,000 for that yr was 4080, what is x?
1) x = 3y/4
2) the ratio of the amt that earned interest at x% to amt of interest earned at y% is 3:2
1) x = 3y/4
2) the ratio of the amt that earned interest at x% to amt of interest earned at y% is 3:2
