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Question 10 - 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 10 Aman's age is three times his son's age. Ten years ago he was five times his son's age. Find their present ages.Let Aman's son's present age be x Then, Aman's present age is 3x Ten years ago, Aman's age = 3x 10 Aman's son's age = x 10 Given, Ten years ago, he was five times his son s age Aman's age = 5 Aman's son's age 3x 10 = 5 (x 10) 3x 10 = 5x 50 3x 10 + 50 = 5x 3x + 40 = 5x 40 = 5x 3x 40 = 2x x = 40/2 x = 20 Hence, Aman's Son's age = x = 20 years A man's age = 3x = 3 20 = 60 years
