Math, asked by ronin93, 1 year ago

The ratio of two persons income is 9:7 and the ratio of their expenses are 4:3 , if they manage to save rs2000 , find their incomes.​

Answers

Answered by Vaishnavityagijuhi
45

Answer:

Step-by-step explanation:

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Answered by Anonymous
94

Question:

The ratio of two persons incomes is 9:7 and ratio of their expenses are 4:3 .If they manage to save Rs. 2000. Find their monthly incomes.

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Given :

  • Ratio of incomes of two persons = 9:7
  • Ratio of their expenses = 4:3
  • Money saved in a month = Rs. 2000.

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To find :

  • Monthly income

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Solution :

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Let the incomes of two persons = Rs. 9x and 7x.

Let their expenditures = Rs. 4y and 3y.

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ㅤㅤEquations formed in situation are given by :

ㅤㅤ↬ 9x - 4y = 2000 ...............(1)

ㅤㅤ↬ 7x - 3y = 2000..................(2)

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ㅤㅤMultiply eq. (1) by 3 and eq. (2) by 4 to make ㅤㅤㅤㅤㅤㅤcoefficients of y equal.

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ㅤㅤㅤㅤ↬ 27x - 4y = 6000...............(3)

ㅤㅤㅤㅤ↬ 28x - 12y = 8000...............(4)

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ㅤㅤSubtract eq (3) from eq. (4) to eliminate y :

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ㅤㅤㅤ↬(28x - 27x) -(12y - 12y) = 8000 - 6000

ㅤㅤㅤㅤㅤㅤㅤㅤㅤㅤx = 2000

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ㅤㅤㅤㅤSubstituting value of x in eq. (1) :

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ㅤㅤㅤㅤㅤㅤ9(2000) - 4y = 2000

ㅤㅤㅤㅤㅤㅤㅤㅤㅤy = 4000

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Monthly income of the person 1 = 9x = 9(2000)

ㅤㅤㅤㅤㅤㅤㅤㅤㅤㅤㅤㅤㅤㅤㅤㅤ= Rs. 18,000

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Monthly income of person 2 = 7x = 7(4000)

ㅤㅤㅤㅤㅤㅤㅤㅤㅤㅤㅤㅤㅤㅤㅤㅤ= Rs. 14,000

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