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23 June, 13:32

ABC is a straight line. the length of AB is four times the length of BC. AC = 75cm. work out the length of AB.

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Answers (2)
  1. 23 June, 14:40
    0
    AB = 60 cm

    Step-by-step explanation:

    AB + BC = AC

    let the length of BC = x then AB = 4x, hence

    4x + x = 75

    5x = 75 (divide both sides by 5)

    x = 15

    AB = 4x = 4 * 15 = 60 cm
  2. 23 June, 17:21
    0
    Answer:25

    Step-by-step explanation:

    1m-75 is 25
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