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21 February, 18:29

If 3 buckets containing 2kg of paint has been used to paint a fence 90 m long and 80 cm high. how many buckets of 2kg of paint are necesary to paint a fence 200 meters long and 120 cm high?

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  1. 21 February, 21:29
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    3 buckets covers 90m x 80cm = 3 buckets for 90x0.8 = 3 for 72

    x buckets covers 200m x 120cm = x buckets for 200x1.2 = x for 240

    3/72 = x/240

    720 = 72x

    x = 10 buckets of paint to cover 200mx120cm fence
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