A man who makes a profit of 25 percent by selling sugar at Rs. 4.25/kg., lowers his price so as to gain only 5 paise per Kg. In what ratio must his sales be increased so that his total profit may be the same as before?
a) 1 : 5
b) 1 : 11
c) 1 : 13
d) 1 : 17
e) 1 : 21
a) 1 : 5
b) 1 : 11
c) 1 : 13
d) 1 : 17
e) 1 : 21