The 60$ system had a greater percentage decrease because it was a lower number to begin with. Taking the same portion out of two different numbers will always be a greater decrease for the lower number.
The common denominator is already there 12 is the common denominator!! :)
Answer:
first and third digit are the same.
not prime numbers,
191 yes but 484 no.
A point is a geometry figure named with lowercase letters (I'm pretty sure)
