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spidergirl51

  • 2 years ago

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

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  1. spidergirl51
    • 2 years ago
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    anyone help?

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

  3. spidergirl51
    • 2 years ago
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    hmm anyone have a clue?

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

  5. spidergirl51
    • 2 years ago
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    okay c:

  6. faby9898
    • 2 years ago
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    gimme 5 minutes im asking my teacher

  7. spidergirl51
    • 2 years ago
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    oh ok

  8. faby9898
    • 2 years ago
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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.

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

  10. faby9898
    • 2 years ago
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    yes and tom is 11

  11. spidergirl51
    • 2 years ago
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    thanks so much c;

  12. faby9898
    • 2 years ago
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    ur welcome :)

  13. spidergirl51
    • 2 years ago
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    just ask if u have any problems in math

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

  15. faby9898
    • 2 years ago
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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?

  16. spidergirl51
    • 2 years ago
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    like 9 th

  17. faby9898
    • 2 years ago
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    i am too haha its hard huh?

  18. spidergirl51
    • 2 years ago
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    soorta

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

  20. edgarhinojoza
    • 2 years ago
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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

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

  22. edgarhinojoza
    • 2 years ago
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    oh my bad, i didnt see that

  23. faby9898
    • 2 years ago
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    lol its totally fine :)

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