The one answer i recall: i gave a scenario of a restaurant owner who wanted to borrow some money to give a facelift to his restaurant. i looked at the numbers and it was feasible. it was located in a good central location. i paid a visit to the restaurant and i found there was a lot of wasted space. i mentioned this to the customer. which he replied i wanted to explore this space but i didnt think i can. so in a nutshell i was able to show based on current numbers if the customer increased the capacity and utilised the space he would be able to improve his daily taking by a 5% and his costs will increase by 2% a day. meaning that his profit per day will increase by 3%. the customer took the increase loan. there was more meat added to the bones in this example but that was the gest of it.