The ratio of the selling prices of three articles is 5:6:9 and the ratio of their cost prices is 4:5:8. What is the ratio of their respective percentages of profit, if the profit on the first and the
The ratio of the selling prices of three articles is 5:6:9 and the ratio of their cost prices is 4:5:8. What is the ratio of their respective percentages of profit, if the profit on the first and the