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spidergirl51

Sarah is 6 years older than 3 times the age of her son Tom. The difference in sarah age and Tom's age is 28 years. A. Write an equation using the information given? B. How old are Sarah and Tom

  • one year ago
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  1. spidergirl51
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    anyone help?

    • one year ago
  2. spidergirl51
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    Its Algebra I guess and i need to do it for hw can anybody help please c:

    • one year ago
  3. spidergirl51
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    hmm anyone have a clue?

    • one year ago
  4. faby9898
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    ill help just give me a minute to work it out

    • one year ago
  5. spidergirl51
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    okay c:

    • one year ago
  6. faby9898
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    gimme 5 minutes im asking my teacher

    • one year ago
  7. spidergirl51
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    oh ok

    • one year ago
  8. faby9898
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    There are two statements about the ages. That means there are TWO equations. Let S be Sarah's age and T be Tom's age. Then: S = 6 + 3T .... "Sarah is 6 years older than 3 times the age of her son Tom" |S - T| = 28 .... "The difference in Sarahs age and toms age is 28 years" Since you know from common sense that Sarah is older than Tom, you can drop the absolute value bars and have two equations in two unknows. The second is now: S - T = 28 .... which you can rewrite as: S = T + 28 .... and use this to subsitute for S in the first equation: (T + 28) = 6 + 3T T + 22 = 3T .... subtracted 6 from both sides 22 = 2T .... subtracted T from both sides T = 11 .... divide both sides by 2, and put the variable on the left Tom is 11 years old. Sarah's age is 6+3T = 6 + 3(11) = 6 + 33 = 39 years.

    • one year ago
  9. spidergirl51
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    so sarah is 39 years old?

    • one year ago
  10. faby9898
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    yes and tom is 11

    • one year ago
  11. spidergirl51
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    thanks so much c;

    • one year ago
  12. faby9898
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    ur welcome :)

    • one year ago
  13. spidergirl51
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    just ask if u have any problems in math

    • one year ago
  14. spidergirl51
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    i need to do a lot of these tyoe of problems for math and its super hard

    • one year ago
  15. faby9898
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    its pretty easy once u find the equation and yes i have some problems in math but i manage to get threw them haha what grade r u in?

    • one year ago
  16. spidergirl51
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    like 9 th

    • one year ago
  17. faby9898
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    i am too haha its hard huh?

    • one year ago
  18. spidergirl51
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    soorta

    • one year ago
  19. faby9898
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    u will get it soon enough haha i homeschool and i manage to get through it

    • one year ago
  20. edgarhinojoza
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    S = T(3) + 6 S - T = 28 the age difference 28 x's 3 + 6 = S S stands for Sara T stands for Tom

    • one year ago
  21. faby9898
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    i kinda already said that in the last message :D

    • one year ago
  22. edgarhinojoza
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    oh my bad, i didnt see that

    • one year ago
  23. faby9898
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    lol its totally fine :)

    • one year ago
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