attackontitan12 attackontitan12

15-11-2017
Mathematics

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what is the ratio of a to b 10/21=2a/a+b

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musiclover10045 musiclover10045

15-11-2017

10/21 = 2a/(a + b)

21(a + b)
10a + 10b = 42a, so 10b = 32a and a/b = 10/32 which reduces to 5/16

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