Giving the disadvantages of bad currency, Groepe said, The quality of banknotes in circulation also poses a reputational risk for the central bank and in fact for the country. Central Banks meet in SA to improve currency security and cash management
When the marginal utility comes to zero or we say the point of satiety is reached, the total utility is the maximum. If consumption is increased further from this point of satiety, the marginal utility becomes negative and total utility begins to diminish. The relationship between total utility and marginal utility is now explained with the help of following schedule and a graph.
If you happen to consume 10 goods, your total utility from the consumption of these 10 goods will be 160. Marginal utility is calculated by taking the difference in total utilities, and dividing by the change in quantity consumed. Most of the time the change in quantity consumed will be 1, but this is not always the case.