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CONSUMER’S
EQUILIBRIUM
PART 1
SUDHANSHU PANDEY
SUDHANSHU PANDEY
CONSUMER
A Consumer is one who consume goods and services for satisfaction of his
Wants.
Consumer is the seeker of Satisfaction.
(TU) → Total Utility: It is the sum total of utility derived from
consumption of all units of a commodity.
(MU) → Marginal Utility: It is the change in TU due to consume of an
additional units.
Utility is the wants satisfying capacity of a commodity.
CARDINAL APPROACH
Law of Diminishing Marginal Utility
As we consume more and more units of a commodity then the marginal
utility derives from each an additional unit goes on diminishing.
Marginal utility always falls, zero and negative.
Assumptions
(i)
(ii)
(iii)
Consumer is rational.
Applicable in Cardinal approach
Only standard units of the commodity are consumed like cup of tea, not a
spoon of tea.
(iv) Continuous consumption of Homogeneous commodity, not that one unit of
the commodity is consumed now an another on tomorrow.
Quantity TU MU
0 0 -
1 8 8
2 14 6
3 18 4
4 20 2
5 20 0
6 18 -2
Relationship between TU & MU
1) As TU increases Mu is positive
2) As TU falls MU is negative
3) As TU is maximum (Saturation point)
MU is zero
(point of Satiety)
Consumer Equilibrium
Consumer Equilibrium in Case of Utility Approach
(a) In case of single commodity: In this case consumer Consumes only one
commodity
Equilibrium is the point where the consumer is getting the maximum
satisfaction with his given income.
In this case consumer is equilibrium at a point where the marginal utility of X
commodity is equal to price of X commodity
No. of units MUx Px
1 10 6
2 8 6
3 6 6
4 4 6
Schedule and Diagram
(b) In Case of Double Commodity: In this case consumer consumes two
commodity X and Y.
In case of any one commodity, say X a consumer is in equilibrium when (1)
Similarly in case of commodity Y consumer is in equilibrium when (2)
So relating equation (1) and (2)
We consider a situation when a consumer, both commodities X and Y, we
can say
Here marginal utility per rupee must be the same for both. Consumer is in
equilibrium when ratio of their marginal utilities is equal to the ratio of their prices.
Units Mux MUy
1 7 8
2 5 6
3 4 4
4 2 3
5 1 2
Schedule and Diagram
What happens when
What happens when
Q2.
Thank you
KEEP ON SUPPORTING

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CONSUMER EQUILIBRIUM SPCC_06beee58-3a1e-4713-9054-c39541f674b2_121327-1-17-1-17.pdf

  • 2. CONSUMER A Consumer is one who consume goods and services for satisfaction of his Wants. Consumer is the seeker of Satisfaction.
  • 3. (TU) → Total Utility: It is the sum total of utility derived from consumption of all units of a commodity. (MU) → Marginal Utility: It is the change in TU due to consume of an additional units. Utility is the wants satisfying capacity of a commodity. CARDINAL APPROACH
  • 4. Law of Diminishing Marginal Utility As we consume more and more units of a commodity then the marginal utility derives from each an additional unit goes on diminishing. Marginal utility always falls, zero and negative. Assumptions (i) (ii) (iii) Consumer is rational. Applicable in Cardinal approach Only standard units of the commodity are consumed like cup of tea, not a spoon of tea. (iv) Continuous consumption of Homogeneous commodity, not that one unit of the commodity is consumed now an another on tomorrow.
  • 5. Quantity TU MU 0 0 - 1 8 8 2 14 6 3 18 4 4 20 2 5 20 0 6 18 -2
  • 6. Relationship between TU & MU 1) As TU increases Mu is positive 2) As TU falls MU is negative 3) As TU is maximum (Saturation point) MU is zero (point of Satiety)
  • 8. Consumer Equilibrium in Case of Utility Approach (a) In case of single commodity: In this case consumer Consumes only one commodity Equilibrium is the point where the consumer is getting the maximum satisfaction with his given income. In this case consumer is equilibrium at a point where the marginal utility of X commodity is equal to price of X commodity
  • 9. No. of units MUx Px 1 10 6 2 8 6 3 6 6 4 4 6 Schedule and Diagram
  • 10. (b) In Case of Double Commodity: In this case consumer consumes two commodity X and Y. In case of any one commodity, say X a consumer is in equilibrium when (1) Similarly in case of commodity Y consumer is in equilibrium when (2)
  • 11. So relating equation (1) and (2) We consider a situation when a consumer, both commodities X and Y, we can say Here marginal utility per rupee must be the same for both. Consumer is in equilibrium when ratio of their marginal utilities is equal to the ratio of their prices.
  • 12. Units Mux MUy 1 7 8 2 5 6 3 4 4 4 2 3 5 1 2 Schedule and Diagram
  • 15.
  • 16. Q2.
  • 17. Thank you KEEP ON SUPPORTING