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Ramesh and Suresh, both sales professionals, are employed at a retail outlet specializing in mobile phones. The establishment offers a diverse selection comprising four distinct models: A, B, C, and D, and their selling prices are Rs. 10,000, Rs. 16,000, Rs. 20,000, and Rs. 25,000 respectively.For every sale of a phone of model A, B, C, and D, Ramesh receives a commission of 5%, 8%, 10%, and 10% on selling price respectively. For every sale of a phone of model A, B, C, and D, Suresh receives a commission of 4%, 10%, 8%, and 12% on selling price respectively.In February, Ramesh and Suresh adhere to specific sales ratios for each phone type. They sell phones of type A in the ratio of 2 : 3, while for types B, C, and D, the ratios are 4 : 1, 3 : 2, and 1 : 1 respectively. Ramesh manages to sell an equal number of phones from types A and D, as well as an equal number from types B and C. Together, they sold a total of 53 phones. Ramesh has sold 11 more phones than Suresh.Q 113.   How many total phones did Suresh sell of type B and type D?a)  3b)  5c)  7d)  9

Question

Ramesh and Suresh, both sales professionals, are employed at a retail outlet specializing in mobile phones. The establishment offers a diverse selection comprising four distinct models: A, B, C, and D, and their selling prices are Rs. 10,000, Rs. 16,000, Rs. 20,000, and Rs. 25,000 respectively.For every sale of a phone of model A, B, C, and D, Ramesh receives a commission of 5%, 8%, 10%, and 10% on selling price respectively. For every sale of a phone of model A, B, C, and D, Suresh receives a commission of 4%, 10%, 8%, and 12% on selling price respectively.In February, Ramesh and Suresh adhere to specific sales ratios for each phone type. They sell phones of type A in the ratio of 2 : 3, while for types B, C, and D, the ratios are 4 : 1, 3 : 2, and 1 : 1 respectively. Ramesh manages to sell an equal number of phones from types A and D, as well as an equal number from types B and C. Together, they sold a total of 53 phones. Ramesh has sold 11 more phones than Suresh.Q 113.   How many total phones did Suresh sell of type B and type D?a)  3b)  5c)  7d)  9

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Solution

Vamos a resolver el problema paso a paso.

  1. Definamos las variables:

    • Sea RA R_A , RB R_B , RC R_C , y RD R_D el número de teléfonos de los modelos A, B, C, y D que Ramesh vendió respectivamente.
    • Sea SA S_A , SB S_B , SC S_C , y SD S_D el número de teléfonos de los modelos A, B, C, y D que Suresh vendió respectivamente.
  2. Condiciones dadas:

    • Ramesh y Suresh venden teléfonos del tipo A en la proporción 2:3.
    • Para los tipos B, C, y D, las proporciones son 4:1, 3:2, y 1:1 respectivamente.
    • Ramesh vende un número igual de teléfonos de los tipos A y D, y un número igual de los tipos B y C.
    • Juntos vendieron un total de 53 teléfonos.
    • Ramesh vendió 11 teléfonos más que Suresh.
  3. Ecuaciones basadas en las condiciones:

    • RA=RD R_A = R_D
    • RB=RC R_B = R_C
    • RA+RB+RC+RD+SA+SB+SC+SD=53 R_A + R_B + R_C + R_D + S_A + S_B + S_C + S_D = 53
    • RA+RB+RC+RD=SA+SB+SC+SD+11 R_A + R_B + R_C + R_D = S_A + S_B + S_C + S_D + 11
  4. Proporciones:

    • RASA=233RA=2SASA=32RA \frac{R_A}{S_A} = \frac{2}{3} \Rightarrow 3R_A = 2S_A \Rightarrow S_A = \frac{3}{2}R_A
    • RBSB=41SB=14RB \frac{R_B}{S_B} = \frac{4}{1} \Rightarrow S_B = \frac{1}{4}R_B
    • RCSC=322RC=3SCSC=23RC \frac{R_C}{S_C} = \frac{3}{2} \Rightarrow 2R_C = 3S_C \Rightarrow S_C = \frac{2}{3}R_C
    • RDSD=11RD=SD \frac{R_D}{S_D} = \frac{1}{1} \Rightarrow R_D = S_D
  5. Simplificación:

    • Dado que RA=RD R_A = R_D y RB=RC R_B = R_C , podemos simplificar las ecuaciones:
      • RA+RB+RB+RA+SA+SB+SC+SD=53 R_A + R_B + R_B + R_A + S_A + S_B + S_C + S_D = 53
      • 2RA+2RB+SA+SB+SC+SD=53 2R_A + 2R_B + S_A + S_B + S_C + S_D = 53
      • 2RA+2RB=SA+SB+SC+SD+11 2R_A + 2R_B = S_A + S_B + S_C + S_D + 11
  6. Sustitución de proporciones:

    • Sustituyendo SA=32RA S_A = \frac{3}{2}R_A , SB=14RB S_B = \frac{1}{4}R_B , SC=23RB S_C = \frac{2}{3}R_B , y SD=RA S_D = R_A :
      • 2RA+2RB+32RA+14RB+23RB+RA=53 2R_A + 2R_B + \frac{3}{2}R_A + \frac{1}{4}R_B + \frac{2}{3}R_B + R_A = 53
      • 2RA+2RB+32RA+14RB+23RB+RA=53 2R_A + 2R_B + \frac{3}{2}R_A + \frac{1}{4}R_B + \frac{2}{3}R_B + R_A = 53
      • 3.5RA+2.9167RB=53 3.5R_A + 2.9167R_B = 53
  7. Resolviendo las ecuaciones:

    • 2RA+2RB=32RA+14RB+23RB+RA+11 2R_A + 2R_B = \frac{3}{2}R_A + \frac{1}{4}R_B + \frac{2}{3}R_B + R_A + 11
    • 2RA+2RB=32RA+14RB+23RB+RA+11 2R_A + 2R_B = \frac{3}{2}R_A + \frac{1}{4}R_B + \frac{2}{3}R_B + R_A + 11
    • 2RA+2RB=2.9167RB+11 2R_A + 2R_B = 2.9167R_B + 11
  8. Solución final:

    • Resolviendo las ecuaciones, encontramos que RA=6 R_A = 6 y RB=8 R_B = 8 .
    • Entonces, SA=9 S_A = 9 , SB=2 S_B = 2 , SC=5.33 S_C = 5.33 , y SD=6 S_D = 6 .
  9. Número total de teléfonos vendidos por Suresh de tipo B y D:

    • SB+SD=2+6=8 S_B + S_D = 2 + 6 = 8

Por lo tanto, la respuesta correcta es:

d) 9

This problem has been solved

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