Question
If (a +b) :(b+ c) :(c+ a) =4:7:9 And a +b+ c =30 then
find the value of c?Solution
a +b =4x = 4×3=12 b +c =7x =7×3=21 c +a= 9x =9×3 =27 so, 2(a +b +c) = 4x+7x+9x=20x a+ b+ c =10x ATQ- 10x = 30 X=3 So now, c= (a +b +c) – (a +b) C = 30-12 =18
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