cindy44 cindy44

19-05-2016
Mathematics

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which one of following statement expresses a true proportion 3:4=9:12 b. 2:1=1:2 c. 7:9=8:9 d. 54:9=6:3

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penfila11Pen penfila11Pen

19-05-2016

a is the right one:
a. 3:4=9:12
3×3:4×3=9:12

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