Mathematics, 14.10.2019 17:30 donaldwilliams31
The numbers of blue, red, green and black pencils are proportional to the numbers 2, 3, 5, and 7, respectively. if we add the number of the difference of black and green pencils, and the number of the difference of red and blue pencils, then we will get 12. how many green pencils are there? me
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The numbers of blue, red, green and black pencils are proportional to the numbers 2, 3, 5, and 7, re...
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