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bambi21 Group Title

Coach Johnson is 10 years older than Tim. When Tim started football 3 years ago, Coach Johnson was twice his age. How old is Tim now?

  • 3 years ago
  • 3 years ago

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  1. IanT Group Title
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    j = coach johnson's age t = tim's age Coach Johnson is 10 years older than Tim j = t + 10 When Tim started football 3 years ago, Coach Johnson was twice his age t - 3 = (j - 3)/2 And then you have simultaneous equations. j = t + 10 t - 3 = (j - 3)/2 Good luck.

    • 3 years ago
  2. kpopguy Group Title
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    idk why but i cant solve it.

    • 3 years ago
  3. IanT Group Title
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    Okay, how about use substitution. You know from that first equation what j is; j = t + 10 replace j with (t + 10) in the second equation. so instead of t - 3 = (j - 3)/2 you have t - 3 = ((t + 10) - 3)/2 Now solve for t and you can find out what t is.

    • 3 years ago
  4. seekevinella Group Title
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    13 is the answer

    • 3 years ago
  5. Coyzita Group Title
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    Coach is 13 years old

    • 2 years ago
  6. mikaa_toxica13 Group Title
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    ????????? i get that this a very old question but i have a question for @Coyzita . how is the coach 13 years old ??????

    • 2 years ago
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