A variable line through the point (1/5,1...

A variable line through the point `(1/5,1/5)` cuts the coordinate axes in the points A and B. If the point P divides AB internally in the ratio 3: 1, then the locus of P is :

3y+x=20xy

y+ 3x = 20xy

x+y = 20xy

3x + 3y =20xy.

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