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4 January, 16:55

Laura decides to walk to her job. she walks 1 1/2 miles in 3/5 hour. what is laura's walking rate? laura's job is 4 1/2 miles away. if she starts walking to her job at 9:00 a. m. and is scheduled to start work at 11:00 a. am., will she arrive at her job on time?

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  1. 4 January, 17:00
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    To find the rate in miles per hour, divide the miles by the hours.

    (1 1/2 miles) / (3/5 hour) =

    = 3/2 miles * (5/3 hour)

    = 5/2 mph

    = 2 1/2 mph

    Her walking rate is 2 1/2 mph.

    (4 1/2 miles) / (2 1/2 mph) =

    = 9/2 miles / (5/2 mph)

    = 9/2 * 2/5 hours

    = 9/5 hours

    = 1 4/5 hours

    From 9:00 a. m. to 11 a. m., she has 2 hours, but she only needs 1 4/5 hours to walk, so she will make it to work on time.
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