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14 September, 08:44

Kelly's mom timed her as she swam a three lap race in 1minute 43secinds. Her swimming coach timed kelly only on her last two laps describe how kelly might calcite how long it took her to swim the first lap using the information from her mom and coach

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  1. 14 September, 11:21
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    See explanation below

    Step-by-step explanation:

    Lap 1 + Lap 2 + Lap 3 = 1 min 43 seconds

    Lap 2 + Lap 3 = timed by coach

    Hence,

    Lap 1 + "timed by coach" = 1 min 43 seconds

    Lap 1 = 1 min 43 seconds - "timed by coach".

    So, Kelly can subtract the time taken on last 2 laps (from coach) from 1 minutes and 43 seconds
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