Question

● The difference between the ages of two person is 10 years . 15 years ago, the elder one was twice as old as younger one . The present age of the elder person is : option : 1. 34 years 2. 29 3. 35 4. 38 yrs 5 . 40 yrs ☆{Answer log method se nhi chahiye isko jitna short kr sakte ho kro}​

Answer 1

EXPLANATION.

• GIVEN

The difference between the ages of two person

is 10 years.

15 years ago the elder one was twice as old as

younger one.

TO FIND PRESENT AGE OF THE ELDER

PERSON.

Let the present age of younger person

will be = x years.

15 years ago it will be = ( x - 15 ) years.

Let the present age of elder person will be

=> x + 10 .....(1)

15 years ago it will be = x + 10 - 15 = x - 5

The elder was twice as old as younger.

=> x - 5 = 2 ( x - 15 )

=> x - 5 = 2x - 30

=> -x = -25

=> x = 25

From equation (1) we get

=> 25 + 10 = 35 years.

Therefore,

present age of elder person = 35 years.

Answer 2

Question:

The difference between the ages of two person is 10 years. 15 years ago, the elder one was twice as old as younger one . The present age of the elder person is

1. 34 years.
2. 29 years.
3. 35 years.
4. 38 years.
5. 40 years.

To find:

★ To find the present age of elder person.

Answer:

Option 3) 35 years is the correct .

The present age of elder person is $\underline{\sf\pink{\bold{35 years}}}$.

Given:

The difference between the ages of two person is 10 years.

Step-by-step explanation:

Let the present age of elder person be x .

The difference between the ages of two person is 10 years

$\therefore \underline{ \: (x - 10) \: years \: }$

15 years ago, the elder one was twice as old as younger one

$\implies x - 15 = 2(x - 10 - 15)$

$\implies x - 15 = 2(x - 25)$

$\implies x - 15 = 2x - 50$

$\implies 2x - x = 50 - 15$

$\implies \boxed{ x = 35}$

$\therefore$The present age of elder person is $\underline{\bold{35 years}}$.

Option 3) 35 years is the correct answer .