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The points D, E, F divide BC, CA and AB...

The points `D, E, F` divide `BC, CA and AB` of the triangle ABC in the ratio `1:4,3:2 and 3:7` respectively and the point divides AB in the ratio `1:3`, then `(bar(AD) +bar(BE) + bar(CF)): bar(CK)` is equal to

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