The amount that needs to be changed = 6.60 pounds The ratio in which the given amount needs to be divided = 5:6 Let us assume the common ratio to be = x Then 5x + 6x = 6.60 11x = 6.60 x = 6.60/11 = 0.6 So The ratio for dividing 6.60 in the ratio 5:6 will be = 5 * 0.6: 6 * 0.6 = 3:3.6 This is the simplest way to to find the ratio of the amount 6.60 pounds. I hope you have understood the procedure.