I want to know if the currents Io and I1 i got are correct or not please

 

You must be taking the same class as Tanzer1234. See the advice I offered him.

 

Actually i am, but we are only allowed to use KVL and KCL in solving this problem, we are not allowed to use mesh method to solve this problem

 

The mesh method is the use of KVL.

See: http://www.allaboutcircuits.com/vol_1/chpt_10/3.html

Looking over your work, I see that one mistake you are making is to represent the value of the 200 mA current source as 200 in your calculations. All of the rest of your calculations are in amps, not milliamps, so you should use .200 for the value of that current source.