Question

After 12 years, Seema will be three times as old as she was 4 years ago. Find her present age.

Answer 1

Answer:

present age = 12 years

Step-by-step explanation:

x = present age

x + 12 = age after 12 years

x-4 = age 4 years ago

according to the question,

x+12 = 3(x-4)

x+12=3x-12

24=3x-x

2x=24

x=24/2

x=12

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Answer 2

Step-by-step explanation:

Let x be Seema's present age

x + 12 will be Seema's age 12 years from now.

3(x-4) will be three times as old as Seema 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

x=12

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