Question

after 12 years i shall be 3 times as old as i was 4 years ago. then my present age is equal to

Answer 1

Answer:

let present age be x yrs

after 12 yrs= x+12

4 yrs ago= x-4

1st condition.

x+12 = 3( x-4)

x+12= 3x - 12

24 = 2x

x = 12

Ans. My present age is 12 yrs

Answer 2

★ Answer ★

$\rule{300}2$

Let x = present age

• x + 12 will be my age 12 years from now.
• 3(x-4) will be three times as old as I was 4 years ago

→ x+12 = 3(x-4)

★ Solve for x

→x+12 = 3x - 12

*subtract x from both sides

→12 = 2x - 12

*add 12 to both sides

→24 = 2x

*divide both sides by 2

→12 = x

→ My present age is 12 years

$\rule{300}2$

*Verification*

→x+12 = 3(x-4)

→ 12+12 = 3(12-4)

→ 24 = 3(8)

→ 24 = 24 Verified√√

$\rule{300}2$