20.50 * 0.8 = $16.40
16.40 * 0.4 = $6.56
Final selling price = $6.56
U have to multiply and then divide it and find that scale
Answer:
In simplest form, it should be:
3:2
6 / 2 = 3
4 / 2 = 2
Hope this helps!
An example of the difference of squares would be: a^2-b^2 = (a+b)(a-b)
