Molly always deposit more $40 while Vitto always duplicate the money, so we can withdray 2 equations
For Molly: $ = 40.n
For Vitto: $ =
![1.2^(n - 1)](https://img.qammunity.org/2019/formulas/mathematics/middle-school/uq2czeyqx2mdzyxjespi5z92o0lgej5naz.png)
where n is the month number and $ the money
So, we can say?
![2^(n - 1)>40n](https://img.qammunity.org/2019/formulas/mathematics/middle-school/j3q08en1t6xjtgznne3g1pju5856no86ou.png)
Look, in the 10th month, Vitto will have
=512 while Molly will have 40.10 = 400
So, Vitto's balance will be greater after a very long time. A.