Question

After 12 years, i shall be 3 times as old as i was 4 years ago. Find my present age.

Answer 1

After 12 years, my age be 3 times as old as I was 4 years ago

My present age = ?

let my age be x

4-3x +12 = x

1x + 12 = x

13x = x

x=13

my age after 12 years = 13 years

So my age before 4 years is

13 - 4 = 9

verify

9+4 = 12

Answer 2

Answer:

⛧Question

After 12 years, i shall be 3 times as old as i was 4 years ago. Find my present age.

☆To Find

• The present age.

⛧ Solution

Let, present age be X years.

⇢ After 12 years age will be (X+12) years.

⇢ 4 years ago age was (x-4) years.

✎According to the Question

$\blue{∴} \red{x + 12 = 3(x - 4)}$

$\purple{ \implies}x + 12 = 3x - 12$

$\purple{ \implies}x - 3x = - 12 - 12$

$\purple{\implies } - 2x = - 24$

$\purple{\implies } \frac{ - 2x}{ - 2} = \frac{ - 24}{ - 2}$

$\purple{\implies } \red{\ x = \blue{12}}$

$\small{ \mathtt {Thus, \: the \: present \: age \: is \: = \blue{12 \: years}}}$

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