मराठी

When Price of a Commodity Falls by Rs 1 per Unit, Its Quantity Demanded Rises by 3 Units. Its Price Elasticity of Demand is (−) 2. Calculate Its Quantity Demanded If the Pric - Economics

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प्रश्न

When price of a commodity falls by Rs 1 per unit, its quantity demanded rises by 3 units. Its price elasticity of demand is (−) 2. Calculate its quantity demanded if the price before the change was Rs 10 per unit. 

उत्तर

Initial Price (P)=Rs 10 

Initial Qunatity (q)=x 

`ΔP=-1` 

`Δq=3` 

`E_d=(-)2` 

`E_d= (Δq)/(Δp)xxp/q` 

`Or,-2=3/-1xx10/x` 

Or,x=15 `"units(Initial Quantity Demanded)"`

 

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2009-2010 (March) All India Set 1

संबंधित प्रश्‍न

Explain the effect of the following on the price elasticity of demand of a commodity:

(i) Number of substitutes

(ii) Nature of the commodity 


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Group 'A' Group 'B'
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(b) Perfectly elastic supply (2) Vertical supply curve
(c) Land (3) Transfer income
(d) Unemployment allowance (4) Horizontal supply curve
(e) Reserve Bank of India (5) Inverse relation
  (6) Rent
  (7) 1935
  (8) Direct relation

State whether the following statement is  true or false :

Concept of ‘elasticity of demand’ is useful for the finance minister.


Define or explain the following concepts (Any THREE): 

Stock


State with reason whether you agree or disagree with the following statements. (any Three) 
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Choose the correct answer :                  

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Group A
Group B
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2. Point method
b. Complementary
3. Necessary goods
c. Geometric method
 
d. Inelastic demand

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Reason (R): The demand for soap, salt, matches etc. is highly inelastic because the consumer spends a very small amount of expenditure in relation to his/her income.


Explain briefly the factors on which elasticity of demand depends.


State 3 factors which affect price elasticity of demand.


Discuss any three/ four factors determining price elasticity of demand.


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