Interesting GMATFix Problem-10

[arora007]

On the same day, Mario and Luigi each open an investment account and each make an initial deposit. No other deposit or withdrawl was made on either account, If each account grows at p

percent per year, the size of Mario's account will be what percent of the size of Luigi's account after y years?
1) Mario's initial deposit is $10,000 and y=5
2) Luigi's initial deposit is 40% greater than Mario's initial deposit.

[clock60]

here got B
we need to know what is M/L-? if M and L are initial accounts and (1+p/100)^y can be canceled in the ratio
(1) insuff as L is not mentioned
(2) L=0,4M from here it is easy to derive that M/L=5/2-sufficient

[arora007]

OA is B indeed.