It says

Let X = Number Of Years

20 + x = young man's future age

40 + x = father's future age

20 + x = 3/4(40 + x)

It says

Let X = Number Of Years

20 + x = young man's future age

40 + x = father's future age

20 + x = 3/4(40 + x)

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Round Lake, IL

The equation they give you, 20 + x = 3/4(40 + x), is the equation you need to solve.

And 10 years is not the solution. In 10 years the you man will be 30, 3/4 of his dad's age now, but his dad will be 50 and so the young man will be 3/5 his age.

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