Subject: mathqa
Question: real - estate salesman z is selling a house at a 25 percent discount from its retail price . real - estate salesman x vows to match this price , and then offers an additional 5 percent discount . real - estate salesman y decides to average the prices of salesmen z and x , then offer an additional 30 percent discount . salesman y ' s final price is what fraction of salesman x ' s final price ?
Option: 
A: 25 / 34
B: 27 / 34
C: 55 / 71
D: 21 / 34
Answer: C