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By proportionality law, check whether 3 : 2 and 30 : 20 are in proportion. |
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Answer» Here the extremes are 3 and 20 and the means are 2 and 30. Product of extremes, ad = 3 × 20 = 60. Product of means, bc = 2 × 30 = 60. Thus by proportionality law, we find ad = bc and hence 3 : 2 and 30 : 20 are in proportion. |
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