SOLUTION: I have two books on my shelf. The one about Jeanette is 50 years older than the one about Nelson. In 40 years from now, the one about Jeanette will be twice as old as the one about

Question 591113: I have two books on my shelf. The one about Jeanette is 50 years older than the one about Nelson. In 40 years from now, the one about Jeanette will be twice as old as the one about Nelson. Using one unknown, find the current age of the book about Nelson.
Let x=book about Nelson. Then x + 40 = future age of Nelson book
Now what?
Answer by nyc_function(2741) (Show Source): You can put this solution on YOUR website!
The right equation leading to your answer is (x + 50) + 40 = 2(x + 40). I will let you finish.
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