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30 March, 22:17

There are 18 pieces of chalk. The ratio of chalk that is yellow to chalk that is not yellow is 1 to 2. How many pieces of chalk are yellow?

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  1. 30 March, 22:34
    0
    1:2 ... added = 3

    1/3 (18) = 18/3 = 6 (yellow chalk)

    2/3 (18) = 36/3 = 12 (not yellow)

    so 6 pieces are yellow and 12 pieces are not
  2. 31 March, 01:22
    0
    6 chalk are yellow and 12 pieces of chalk are not yellow
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