Question 1058036: in 30 years i will be 8 times as old as i was 12 years ago find my age
Answer by solve_for_x(190)   (Show Source):
You can put this solution on YOUR website! Let x represent your current age.
In 30 years, you age will be x + 30.
12 years ago, your age was x - 12.
Since your age in 30 years will be 8 times your age 12 years ago,
you can write the following equation:
x + 30 = 8(x - 12)
x + 30 = 8x - 96
8x - 96 = x + 30
8x - x - 96 = 30
7x - 96 = 30
7x = 30 + 96
7x = 126
x = 18
Your current age is 18.
Check:
In 30 years, your age will be 48.
12 years ago, your age was 18 - 12 = 6 years old.
6 * 8 = 48, so the solution checks
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