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10-09-2016
Mathematics

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solve the proportion. 10/a= 15/30 a. 2 b. 5 c. 10 d. 20

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Аноним Аноним

10-09-2016

15/30 is the same as 1/2.

1/2 x 10/10
=10/20

The answer is d) 20.

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