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28 July, 22:14

ABC is a straight line.

The length of BC is three times the length of AB.

AC = 80 metres.

Work out the length BC.

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Answers (2)
  1. 28 July, 22:35
    0
    The length of bc is 60 meters
  2. 28 July, 22:54
    0
    AB = 20 metres

    BC = 60 metres

    Step-by-step explanation:

    Let AB = x

    Then, BC = 3x

    Condition:

    => x+3x = 80

    => 4x = 80

    Dividing both sides by 4

    => x = 20

    So,

    AB = 20 metres

    BC = 3 (20)

    BC = 60 metres
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