Algebra 1

Terry has completed 15 homework problems, and Susan has competed 9. Terry is completing 10 problems per hour and Susan is competing 12 problems per hour. After how many hours will terry and susan have completed the same number of problems ??

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  1. terry = 15 + 10 t
    susan = 9 + 12 t

    so
    15 + 10 t = 9 + 12 t

    2 t = 6
    t = 3 hours

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    posted by Damon
  2. @damon so 3 hours ?

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  3. Yes, but figure out why.

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    posted by Damon
  4. Um because at 3 hours they have the same amount of problems done.

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  5. Exactly

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    posted by Damon
  6. @damon thank you

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