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Question

The ratio in which the x-axis divides the line segment joining the points (6,4) and (1,7) is m:n, then m+n =.

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Solution

Let the line segment joining the points (6,4) and (1,-7) be divided by the point on x-axis(x,0) in the ratio k:1.
Using section formula,
7k+4k+1=0

7k+4=0
k=47

Therefore, the ratio m:n is 47:14:7

Hence, m+n=4+7=11

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