Question
Total Utility and Marginal Utility.

Answer

Total Utility :
    1. Total utility is the sum total of utilities derived from the consumption of all units in a given stock of a commodity.
    2. TU =Σ MU
    3. TU increases but at a diminishing rate.
    4. At point of satiety TU is maximum.
    5. After point of satiety TU starts diminishing.
    6. Numerical value of TU is always positive.
    7. TU indicates value-in-use.
    8. When TU is maximum, the MU is zero.
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  1. Marginal utility is the additional utility derived from consuming additional unit of a commodity.
  2. $MU_n = TU_n – TU_{n-1}$
  3. MU continuously diminishes.
  4. At point of satiety MU is zero.
  5. After point of satiety MU becomes negative.
  6. Numerical value of MU can be positive, negative or zero.
  7. MU indicates value-in-exchange.
  8. When the MU is maximum the TU is minimum.
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