Question 1123239: sarah was born when her father was 24 years old.After how long will her father be three times her age? shedunankai@gmail.com Found 2 solutions by ikleyn, MathTherapy:Answer by ikleyn(52788) (Show Source):
Let x = "after how long" years.
Then your equation is
3x = x + 24
2x = 24 ====> x = 24/2 = 12.
In 12 years, Sarah is 12, while her father is 12 + 24 = 36, and 36 is 3 times 12.
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