SOLUTION: 1) A girl is x years old. Her father is three times as old. If the difference in their ages is 30 years, a)form an equation in x, b) solve the equation to find the girls age

Algebra ->  Customizable Word Problem Solvers  -> Age -> SOLUTION: 1) A girl is x years old. Her father is three times as old. If the difference in their ages is 30 years, a)form an equation in x, b) solve the equation to find the girls age       Log On

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Question 1040414: 1) A girl is x years old. Her father is three times as old. If the difference in their ages is 30 years,
a)form an equation in x,
b) solve the equation to find the girls age

Answer by jorel555(1290) About Me  (Show Source):
You can put this solution on YOUR website!
If the girl is x, then her father is 3x. The difference in their ages is 3x-x. So:
a)3x-x=30
b)2x=30
x=15
3x=45 ☺☺☺