math

tom's work is 18km away, he starts walking to work at 5:30. He walks 4km every hour. His work opens at 9:00 will he be on time?

sue leaves home and ride her bike to work at 7:30. She rides 12km every hour. When does sue overtake tom. how far have they travelled?

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asked by sam

  1. Tom has 3 1/2 hours to get to work.

    18/4 = 4 1/2 hours

    ___________

    What do you think the answer to Sue's problem is?

    We'll be glad to check your work.

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    posted by Ms. Sue

  2. sue takes 1 1/2 to ride to work,
    okay i got that. but now when does sue overtake tony? does sue overtake it in 2hrs less than tom....
    BUT HOW FAR DID THEY TRAVEL?

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    posted by sam

  3. Here's how I attacked this problem.

    When Sue started out at 7:30 she had traveled 0 km and had 18 km to go.

    By 7:30, Tom had traveled 8 km and had 10 km to go.

    At 8:30, Sue had traveled 12 km.
    At 8:30, Tom had also traveled 12 km.

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    posted by Ms. Sue

  4. thank you so much sue. your the best. I think I am getting it

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    posted by sam

  6. You're very welcome, Sam. I'm glad you understand. :-)

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    posted by Ms. Sue

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