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Vanishree
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Asked: 2021-03-04T10:05:53+00:00 In:

The ages of Rahul and Haroon are in the ratio 5:7. Four years later the sum of their ages will be 56 years. What are their present ages?

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NCERT Solutions for Class 8 Mathematics Chapter 2
Important NCERT Questions
Linear Equations in one Variable Chapter 2 Exercise 2.2
NCERT Books for Session 2022-2023
CBSE Board
Questions No: 9

2020-2021cbsechapter 2class8linear equations in one variablemathematicsncert
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    1. Best Answer

      Let the present ages of Rahul and Haroon be 5x years and 7x years respectively.
      According to condition, (5x+4)+(7x+4)=56
      ⇒ 12x+8=56
      ⇒ 12x+8-8=56-8 [Subtracting 8 from both sides]
      ⇒ 12x/8
      ⇒ 12x/12=48/12 [Dividing both sides by 12]
      ⇒ x=4
      Hence, present age of Rahul = 5 x 4 = 20 years and present age of Haroon = 7 x 4 = 28 years.

      for more answers vist to:
      https://www.tiwariacademy.com/ncert-solutions/class-8/maths/chapter-2/

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