A problem

Level 2

The coordinates of the point Q Q which divides the interval A B AB with endpoints A ( 2 , 5 ) A(2,5) and B ( 10 , 7 ) B(10,-7) internally in the ratio 5 : 3 5:3 are in the form ( x , y ) (x,y) . What is the value of 10 x + 10 y 10x + 10y ?


The answer is 45.

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