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Market demand is given as Qd = 75 – P. Market supply is given as Qs = 3P + 15. If price increases from $5 to $7, what is the price elasticity of demand? Question 5Select one: a. 0.1 b. 0.3 c. 1.1 d. 2.3 e. None of the above.

Question

Market demand is given as Qd = 75 – P. Market supply is given as Qs = 3P + 15. If price increases from 5to5 to 7, what is the price elasticity of demand? Question 5Select one:

a. 0.1

b. 0.3

c. 1.1

d. 2.3

e. None of the above.

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Solution

Para calcular la elasticidad precio de la demanda, primero necesitamos encontrar la cantidad demandada a los precios inicial y final, y luego usar la fórmula de elasticidad precio de la demanda.

  1. Encuentra la cantidad demandada a los precios inicial y final:

    • Precio inicial (P1) = $5
    • Precio final (P2) = $7

    Usamos la ecuación de la demanda Qd = 75 - P.

    • Cantidad demandada inicial (Qd1) cuando P = 5: Qd1 = 75 - 5 = 70

    • Cantidad demandada final (Qd2) cuando P = 7: Qd2 = 75 - 7 = 68

  2. Calcula el cambio porcentual en la cantidad demandada y el cambio porcentual en el precio:

    • Cambio en la cantidad demandada (ΔQd) = Qd2 - Qd1 = 68 - 70 = -2

    • Cambio en el precio (ΔP) = P2 - P1 = 7 - 5 = 2

    • Cambio porcentual en la cantidad demandada: ΔQdQd1×100=270×100=2.86% \frac{\Delta Qd}{Qd1} \times 100 = \frac{-2}{70} \times 100 = -2.86\%

    • Cambio porcentual en el precio: ΔPP1×100=25×100=40% \frac{\Delta P}{P1} \times 100 = \frac{2}{5} \times 100 = 40\%

  3. Calcula la elasticidad precio de la demanda:

    La fórmula de la elasticidad precio de la demanda es: Ed=Cambio porcentual en la cantidad demandadaCambio porcentual en el precio E_d = \frac{\text{Cambio porcentual en la cantidad demandada}}{\text{Cambio porcentual en el precio}}

    Sustituyendo los valores: Ed=2.86%40%=0.0715 E_d = \frac{-2.86\%}{40\%} = -0.0715

    La elasticidad precio de la demanda es aproximadamente -0.0715. Dado que la elasticidad precio de la demanda se expresa en valor absoluto, tenemos: Ed=0.0715 |E_d| = 0.0715

  4. Selecciona la opción correcta:

    Ninguna de las opciones dadas (0.1, 0.3, 1.1, 2.3) coincide con 0.0715.

Por lo tanto, la respuesta correcta es:

e. None of the above.

This problem has been solved

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