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23 January, 02:35

Jim types 70 words per minute. today, he sat at his computer to finish a document he had started yesterday. after jim typed for 3 minutes, the document had a total of 400 words. how many words were already in the document before jim opened it today?

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  1. 23 January, 02:56
    0
    190 words is the answer
  2. 23 January, 04:25
    0
    There was 200 words before Jim opens the document and started typing.

    If Jim gets 70 words done in 1 minute and he just typed a document for 3 minutes, you would do 70 * 3 to find out how much he typed in 3 minutes. So he typed 210 words in 3 minutes.

    Then, since he ended off with 400 words, you would do 400 - 210 to find out how much words were already in the document before he opened it and started typing.

    So Jim typed 210 words in 3 minutes.

    And there was 290 words before Jim started typing.

    Correct me if I'm wrong.
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