shreeshaa099 shreeshaa099

11-02-2021
Mathematics

contestada

The cost of 7 chairs is equal to the cost of 2 tables. If the cost of 6 chairs and 5 tables is Rs.10,575, find the cost of 12 chairs.

Respuesta :

dammyzee dammyzee

11-02-2021

Answer:

5,400

Step-by-step explanation:

7c = 2t; t = 7c/2

6c +5t = 10575

6c + 5(7c/2) = 10575

6c + 35c/2 = 10575

multiply all through by 2

12c + 35c = 21,150

47c = 21,150

c = 21150/47 = 450

12 chairs = 450 × 12 = 5,400

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