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Question 13 - Forming Linear Equations - Age - Chapter 2 Class 8 Linear Equations in One Variable
Last updated at Dec. 16, 2024 by Teachoo
Chapter 2 Class 8 Linear Equations in One Variable
Concept wise
- Definitions
- Solving Linear Equations - Variables on 1 side
- Solving Linear Equations - Variables on both sides
- Solving Linear Equations - Making equation simpler and then solving
- Forming Linear Equations - Perimeter and Area
- Forming Linear Equations - Fraction - Denominator & Numerator
- Forming Linear Equations - Cost, Sale, Profit
- Forming Linear Equations - Consecutive Numbers
- Forming Linear Equations - Consecutive Multiples
- Forming Linear Equations - Coins and Currency Notes
- Forming Linear Equations - Adding subtracting numbers
- Forming Linear Equations - Two digit number
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Forming Linear Equations - Age
Transcript
Question 13 Arjun is twice as old as Shriya. Five years ago his age was three times Shriya s age. Find their present ages.Let Shriya s Present age be x years Arjun s present age = 2x years Five years ago, Shriya s age = (x 5) years Arjun s age = (2x 5) years Given, Five years ago Arjun s age = 3 Five years ago Shriya s age 2x 5 = 3 (x 5) 2x 5 = 3x 15 2x 5 + 15 = 3x 2x + 10 = 3x 3x = 2x + 10 3x 2x = 10 x = 10 Shreya's Present age = x = 10 years Arjun s present age = 2x = 2 10 = 20 years
