@mmcdara Thankyou for reply. I have updated an edited sheet below with file name questions to make it simple and clear:
Can you go throgh it:
Question.mw 

@acer For your understanding i am attaching a sheet below you can go through it. I have mentioned my decision variables Q1 and Q2, and for all other parameters I have given values and ranges:

I want to get optimum value of Q1 and Q2 at minimum value of TRC. 

For different value of I1 and I2 what is optimum Q1 and Q2 :-  Range of  I1 is from 0 to 5 and     range of  I2 is from 0 to 6 
Need to use FOR LOOP

Question.mw