If y = 30p, and p is prime, what is the greatest common factor of y and 24p, in terms of p?	Choose the correct answer:	A) p	B) 2p	C) 6p	D) 8p	E) p^2
y = 30p = 2*3*5*p   24p = 2^3*3*p   The greatest common factor of 30p and 20p is the product of all the common prime factors, using the lower power of repeated factors. The greatest common factor is 2*3*p = 6p   The answer is 6p.
<result>C</result>
If y = 30p, and p is prime, what is the greatest common factor of y and 24p, in terms of p?