prepare linear equation with one variable using one daily life situation.
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Rishi is twice as old as Vani. 10 years ago his age was thrice of Vani. Find their present ages.
Solution: In this word problem, the ages of Rishi and Vani are unknown quantities. Therefore as discussed above, let us first choose variables for the unknowns.
Let us assume that Vani’s present age is ‘x’ years. Since Rishi’s present age is 2 times that of Vani, therefore his present age can be assumed to be ‘2x’.
10 years ago Vani’s age would have been ‘x – 10 ’ and Rishi’s age would have been ‘2x – 10’. According to the problem statement, 10 years ago Rishi’s age was thrice of Vani i.e. 2x – 10 = 3(x – 10).
We have our linear equation in the variable ‘x’ which clearly defines the problem statement. Now we can solve this linear equation easily and get the result.

This implies that the current age of Vani is 20 years and Rishi’s age is ‘2x’ i.e. 40 years. Let us retrace our solution. If present age of Vani is 20 years then 10 years ago her age would have been 10 years and Rishi’s age would have been 30 years which satisfies our problem statement. Thus, applications of linear equations enable us to tackle such real world problems.
Solution: In this word problem, the ages of Rishi and Vani are unknown quantities. Therefore as discussed above, let us first choose variables for the unknowns.
Let us assume that Vani’s present age is ‘x’ years. Since Rishi’s present age is 2 times that of Vani, therefore his present age can be assumed to be ‘2x’.
10 years ago Vani’s age would have been ‘x – 10 ’ and Rishi’s age would have been ‘2x – 10’. According to the problem statement, 10 years ago Rishi’s age was thrice of Vani i.e. 2x – 10 = 3(x – 10).
We have our linear equation in the variable ‘x’ which clearly defines the problem statement. Now we can solve this linear equation easily and get the result.

This implies that the current age of Vani is 20 years and Rishi’s age is ‘2x’ i.e. 40 years. Let us retrace our solution. If present age of Vani is 20 years then 10 years ago her age would have been 10 years and Rishi’s age would have been 30 years which satisfies our problem statement. Thus, applications of linear equations enable us to tackle such real world problems.
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devlop any two verbal from linear equations having one veriable on both sides from our daily life situations and solve
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