Price increased by M% from 1991 to 1992 and by N% from 1992 to 1993. What was the percentage increase in price from 1991 to 1993?
(1)MN = 300
(2) 100M + 100N + MN = 4,300
I think the answer is B.
As per statement 2, if we take M as either 10 or 30, and N as remaining number, then we can find the answer. We get unique values for M and N.