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21 January, 15:02

Elisa can swim 10 laps in 20 minutes. At this same rate, Elisa can swim laps in 32 minutes.

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Answers (2)
  1. 21 January, 15:08
    0
    16 laps

    Step-by-step explanation:

    10 laps in 20 minutes means that:

    for 1 lap elisa swims for (20 / 10) = 2 minutes

    now you can cross multiply to get the answer for how many laps elisa can swim in 32 minutes

    -- - us the method of cross multiplication when there is one value that you need to find out ... if the rate of change is the same ...

    laps time

    1 : 2

    x : 32

    32 * 1 = 2x

    32 = 2x

    x = 32/2

    x = 16

    hence elisa takes 32 minutes to swim 16 laps
  2. 21 January, 15:28
    0
    16 laps

    Step-by-step explanation:

    If Elisa can swim 10 laps in 20 minutes.

    That's 10 L = 20 mins

    At this same rate Elisa can swim x laps in 32 mins

    Therefore

    10 laps = 20 mins

    x laps = 32 mins

    Cross multiply

    20x = 10 x 32

    20x = 320

    Divide both sides by 20

    20x/20 = 320/20

    x = 16

    Elisa can swim 16 laps in 32 minutes
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