
let the number be x.
<em>according</em><em> </em><em>to </em><em>Question</em><em>.</em><em>.</em><em>.</em>
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hope helpful~
Move variable to left hand side and change its sign, divide both side of the equation by 0.504
6 ×2=12
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7 ×2=34
therefore, 12:34 is a ratio that is twice of 6:17