If i made just ONE posting error in the P/L account under operating expenses.. sue to which my profit goes wrong and hence retained earnings how many mks maximum would i lose?
The general principle is you will be awarded follow on marks for correctly creating the balance sheet for profit figures you have calculated. So, only one penalty. Of course you may have had trouble balancing the balance sheet so this may result in further lost marks. The good news is you can still gain good marks even if you made a minor error early on.
