any one plez help . If the question ask to caluclat ROCE and its given average investment and average accounting profit and the question telling that average investment 100000 by word average and we dont have scrap value or scrap value is zero do we have to divided average investment by 2 ? 100000+0/2 or not . q2-if in the question ask to caluclat NPV and we have in the requrement working capital for firsr year and second year and third and so on ? do we need to calclute the change between the years and when we do that ?