SOLUTION: Hi, thanks for your help in advance! Ok so the problem is: "Three years from now, Bob will be three times as old as he was three years ago. How old is Bob now?" I did try to sol

Question 698642: Hi, thanks for your help in advance!
Ok so the problem is: "Three years from now, Bob will be three times as old as he was three years ago. How old is Bob now?"
I did try to solve this problem on my own, and found that Bob is 6 years old now, but I'm not sure that that is right. I set up my problem like this:
3+x=3(x-3)
3+x=3x-9
12=2x
6=x
Is this correct? Thank you for your time and help!
Found 2 solutions by stanbon, algebrahouse.com:
Answer by stanbon(75887) (Show Source): You can put this solution on YOUR website!
Congratulations. You are correct.
Cheers,
Stan H.
Answer by algebrahouse.com(1659) (Show Source): You can put this solution on YOUR website!
x = Bob's age now
x + 3 = Bob's age in 3 years
x - 3 = Bob's age 3 years ago

x + 3 = 3(x - 3) {three years from now (x + 3), Bob will be 3 times his age 3 years ago (x - 3)}
x + 3 = 3x - 9 {used distributive property}
12 = 2x {subtracted x and added 9 to each side}
x = 6 {divided each side by 2}

Bob is 6 now

For more help from me, visit: www.algebrahouse.com

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