Age...2

I want to know if my set up is correct.

1. In 20 years, Kayleen will be four times older than she is today. What is her current age?

Let x = Kayleen's current age.
Let x + 20 = Kayleen's age in 20 years.

x + 20 = 4x

You say?

2. John is twice as old as his friend Peter. Peter is 5 years older than Alice. In 5 years, John will be three times as old as Alice. How old is Peter now?

John's age now = 2(x + 5)

Peter's age now = x + 5

Alice's age now = x

2(x + 5) = 3x

Let me try this one.

2x + 10 = 3x

10 = 3x - 2x

10 = x

Peter = x + 5 or 10 + 5 = 15 years old.

Yes?

 

correct

 

Check point.