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anonymous

  • 4 years ago

10 years hence, A will be twice as old as B was 10 years ago. If A is now 10 years older than B, find the present age of B. I formed this equation for solving this sum: x + 9 + 10 = 2(x - 10) Where x + 9 is A's age and x is B's age. Just wanted to know if I am right.

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  1. anonymous
    • 4 years ago
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    I got B's age as 39. Am I right??

  2. lalaly
    • 4 years ago
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    is this the full question?

  3. anonymous
    • 4 years ago
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    Yes it is.

  4. anonymous
    • 4 years ago
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    A+10=2(b-10)

  5. anonymous
    • 4 years ago
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    or actually, it's kind of confusing

  6. anonymous
    • 4 years ago
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    10 years from the future or the present?

  7. anonymous
    • 4 years ago
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    x + 9 + 10 denotes A's age 10 years hence. It is equal to 2(x - 10) which is twice of B's age 10 years ago.

  8. lalaly
    • 4 years ago
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    im confused too

  9. anonymous
    • 4 years ago
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    i guess ten years ago from 10 years in the future is the present, lol

  10. anonymous
    • 4 years ago
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    You have a point there.

  11. anonymous
    • 4 years ago
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    But then, they've given 10 years hence for A and 10 years ago for B.

  12. anonymous
    • 4 years ago
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    Pretty sure the original equation i gave is correct

  13. anonymous
    • 4 years ago
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    where did you get x + 9 from?

  14. anonymous
    • 4 years ago
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    Which is same as mine right? Only thing I've replaced A with x + 9.

  15. anonymous
    • 4 years ago
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    Well actually, they're not the same

  16. anonymous
    • 4 years ago
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    x + 9 is A's present age(B's present age is x and A is 9 years older than B) .

  17. anonymous
    • 4 years ago
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    I don't see anything about a 9 in the question...

  18. anonymous
    • 4 years ago
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    Oh, I made a typing mistake its actually if A is 9 years older than B, find B's present age.....

  19. anonymous
    • 4 years ago
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    Can you tell how? Because on solving the equation, I got 39 .....

  20. anonymous
    • 4 years ago
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    let me double check

  21. anonymous
    • 4 years ago
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    I'm sorry, you are right. B is presently 39 years old.

  22. anonymous
    • 4 years ago
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    Thanks for helping.

  23. anonymous
    • 4 years ago
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    A+10=2(B-10) A=2B-30 A=B+9 B+9=2B-30 B=39

  24. anonymous
    • 4 years ago
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    No problem

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