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14 September, 03:10

Insects known as walking sticks move very slowly. They can move 2 inches every 5 seconds. At this rate, how far could a walking stick go in 30 seconds?

___inches.

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  1. 14 September, 03:22
    0
    2/5 = x/30 ... 2 in to 5 sec = x in to 30 sec

    cross multiply

    5x = 60

    x = 60/5

    x = 12 inches <==
  2. 14 September, 03:24
    0
    Since they go 2 inches every 5 seconds, that means for every 10 seconds the walking stick moves 4 inches. Since 10*3=30 4*3=12.

    So in 30 minutes the walking stick moves 12 inches.
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