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12-12-2018
Mathematics

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a contractor is mixing concrete and mixed 3 parts concrete and 9 parts water. How much water is needed for 12 parts concrete?

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sakie329 sakie329

12-12-2018

Answer:

36 parts water

Step-by-step explanation:

3/9 = 1/3 = for every 1 part concrete, it's 3 parts water.

12/x = 1/3; x = 36

so, 12 x 3 = 36

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