Question

The present age of Rajesh is 2 years less than thrice that of the 12 year old boy ranga .the present age of Rajesh is __________​

Answer 1

Answer:

Radha's present age is three years less than twice her age 12 years ago. Also the respective ratio between Raj's present age and Radha's present age is 4 : 9. What will be Raj's age after 5 years?

Let Radha's present age = x years.

Therefore, x = 2(x−12)−3

=> x = 2x - 24 - 3 => x = 27

Therefore, Raj's present age = 49×27 = 12 years

Therefore, Raj's age after 5 years = 12 + 5 = 17 years

Step-by-step explanation:

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Answer 2

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Let the age of Rajesh be y.

So,

12×3–2x=y

y=12×3-2

=>y=36-2

=>y=34

Hence the age of Rajesh is 34.

Proving:-

34÷3-2

34÷1

=>34

Explanation:-

While proving we divided by 1 as 3-2 is equal to 1.

Hence when we devide 34 by 12 we will get 3

Whivh tells that thrice of the number 12 is 36.

And as mention 2 years less.

Than when 36 subtracted by 2 gives 34.

[Note:- Solving such questions by linear equation makes it easier to solve if u know the concept of it well]

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