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In the figure below ( not to scale), ABC...

In the figure below ( not to scale), ABC is a straight line. If `/_ FBE =60^(@), /_ CBG =120^(@), /_ ABG = x^(@), /_ ABF= gamm^(@)` and `/_ CBE = z^(@) = 2 gamma^(@)`, then `( x^(@)+z^(@)) : gamma^(@)` is

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The correct Answer is:
`7:2`
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