SOLUTION: 8 years ago,melanie waz half as old as she will be in 3 years. How old is she presently? please help!!!!!!!!!!!!!!!!!!!!

Question 174419: 8 years ago,melanie waz half as old as she will be in 3 years. How old is she presently? please help!!!!!!!!!!!!!!!!!!!!
Answer by jim_thompson5910(35256) (Show Source): You can put this solution on YOUR website!
Let x=Melanie's age now, y=Melanie's age 8 years ago, and z=Melanie's age in 3 years

So this means that and (by definition)

Since "8 years ago,melanie waz half as old as she will be in 3 years", this tells us that

Start with the given equation.

Plug in and

Multiply both sides by 2.

Distribute.

Add to both sides.

Subtract from both sides.

Combine like terms on the left side.

Combine like terms on the right side.

----------------------------------------------------------------------

Answer:

So the answer is which means that she is currently 19 years old

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