Guideline answers impact

After seeing guideline answers I am more concerned.  Some answers are 100% correct but some are not.  DT and IDT  I have spoilt it in pratical Problems.  Any luck or chance of passing if my problem questions are not 100% as per Guideline answers but they are 50 to 60% atleast or should I assume it as certainity of worst case.

The marking scheme of CA papers is done step wise. Lets say that you were asked a 6 marks question which requires 5 steps/adjustments. For each step/adjustment, you ll be awarded marks and for the final answer you may be awarded 1 mark. So if you have done 3 steps correctly, you will get 3 marks. 

All the best