Answer :

Let the line segment joining (15, 5) and (9, 20) be divided by P(11, 15) in the ratio λ : 1.


By internal division formula,


11 =


11λ + 11 = 9λ + 15


2λ = 4


λ = 2


Required ratio is =2:1


Note: Alternatively, the procedure could have been carried out by y-coordinate.


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