Well the question is very simple(PS: That's why I am solving it :D). I am solving it by loop method. Equivalent circuit is shown in the figure. There are three loops. Assume different current in different loops. There are three unknowns I1, I2, I3 .You will get 3 linear equations in these unknown from 3 loops using Kirchoff's law. Solve it to get I1, I2, I3.
It doesn't matter what direction of current you choose in different loops.
Man believe me it's really difficult to work with microsoft paint.I desperately need circuit maker. :)