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29 April, 00:26

ali's typing rate between 8:00 am and noon is 48 words per minute. after lunch a lunch break, Ali's typing rate between 1:00 pm and 4:00 pm is 2,040 words per hour. what is Ali's average typing rate per minute for the whole time she works?

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  1. 29 April, 00:30
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    41 word/min

    Step-by-step explanation:

    Before noon Ali works:

    4 hours = 4*60 min = 240 min

    She types:

    240*48 = 11520 words

    After lunch she works:

    4 hours

    She types:

    4*2040 = 8160 words

    Total Ali works = 4+4 = 8 hours = 480 min

    Total Ali types = 11520+8160 = 19680 words

    Average typing rate = 19680 words/480 min = 41 word/min
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