Question

plz give the solution of above questions ​

Answer 1

Question 1st -

• Initial price ( P) = Rs 13 .
• Initial demand ( Q) = 11 units .
• New Price ( P') = Rs 15 .
• New demand ( Q') = 11 units
• Price elasticity = x

Solution :-

$\sf{ \underline{ \underline{\red{ \implies \: Ed \: = ( - ) \dfrac{P}{Q} \times \dfrac{ \triangle \: Q}{ \triangle \: P} }}}}$

∆P = P' - P

∆Q = Q' - Q

→ ∆P = 15-11

→ ∆P = 4 .

→ ∆Q = 11 - 11

→ ∆Q = 0

$\sf{ \underline{ \underline{ \implies \: Ed \: = ( - ) \dfrac{13}{11} \times \dfrac{ \: 0}{ \: 4} }}}$

$\sf{ \implies \: Ed \: = ( - ) \dfrac{13}{11} \times 0 }$

$\sf{ \implies \: Ed \: = 0 }$ Ed is 0 .

Question 2.

• Initial price = Rs 1
• Initial quantity = 80/1 → 80 units .
• New Price = Rs 2
• New quantity = 96/2 → 48 units .

Solution :-

→ ∆P = 2-1

→ ∆P = 1

→ ∆Q = 48-80

→ ∆Q = -32 .

$\sf{ \underline{ \underline{ \implies \: Ed \: = ( - ) \dfrac{1}{80} \times \dfrac{ -32 }{ 1 } }}}$

$\sf{ \implies \: Ed \: = ( - ) \dfrac{1}{80} \times -32 }$

$\sf{ \implies \: Ed \: = ( - )- 0.4 }$ $\sf{ \implies \: Ed \: = 0.4 }$ Ed = 0.4

Question 3

Initial price = Rs 5.

Initial demand = 20 units .

New price = 120/24 = Rs 5 .

New demand = 24 units .

→ ∆P = 5-5

→ ∆P = 0

→ ∆Q = 24- 20

→ ∆Q = 4 .

$\sf{ \underline{ \underline{ \implies \: Ed \: = ( - ) \dfrac{5}{20} \times \dfrac{ 4}{ 0} }}}$

$\sf{ \implies \: Ed = \infty }$

Ed is infinite.

When price elasticity of demand is equal to infinite then we have a demand curve in which the slope of demand is horizontal straight line for parallel to x axis .