If 12/21:x=15:3/7 then x is :

Delhi Police Constable 2009 Paper

Question : 54 of 100

Marks: +1, -0

12/21:x=15:3/7

then x is :

Solution:

12/21:x=15:3/7

⇒\;{12}/{21 × x}={15 × 7}/{3}

⇒x=\;{12}/{21} × \;{3}/{15 × 7}=\;{4}/{245}

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