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There is a triangle ABC. It has points X and Y on AB and CB so that XY is parallel to BC. Also, area of triangle BXY is two times the area of quad. ACYX.

What is the ratio of AX to AB ?
check your question when point is on AB then line never will be parallel to AB
Oops... thanks for pointing out
no worries its happens
question is wrong



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Question is wrongly written. I correct that and solve that.  In a ΔABC, X is on AB and Y is on BC so that XY is parallel to AC. Area Quadrilateral ACXY = 2 times area Δ BXY.  Now what is AX / AB?
Answer:  Let BX = t AB.    Angle BXY = angle A and angle BYX = angle C.  So BXY and BAC are similar triangles.  THe sides are proportional. So BY = t BC and XY = t AC.    Now find semi-perimeter  s" of ΔBXY = t(AB+BC+AC) = t s.
Area of ΔBXY = √s" (s"-BX) (s"-BY) (s"-XY)  = √t s t(s-BA) t(s-BC) t(s-AC)
                 = t²  area ΔABC
so t² = 1/2    ==>  t =1/√2      so BX = 1/√2 BA
     so AX =  BA - BX = BA * (√2 - 1)/√2

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