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In an isosceles triangle ABC, the vertex A is (6, 1) and the equation of the base BC is 2x + y = 4. Let the point B lie on the line x + 3y = 7. If (α, β) is the centroid of \DeltaABC, then 15(α + β) is equal to : | Watch the step-by-step video solution for this NIMCET PYQ.