Change £6.60 into the ratio 5: 6 and answer this in a simple form as i'm not very smart

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.