The original problem was successfully solved in previous posts.
We will present below the "alternate version" with one possible solution!
fskilnik wrote:
GMATH practice exercise (Quant Class 1)
In the figure shown, if lines m and n are parallel and all angles are measured in degrees, what is the value of k?
(A) 18
(B) 20
(C) 22
(D) 25
(E) 27
\(? = k\,\,\,\left[ {{\rm{degrees}}} \right]\)
\(\left( {5k\,\,{\rm{is}}\,\,{\rm{exterior}}\,\,{\rm{angle}}\,{\rm{for}}\,\,\Delta } \right)\,\,\,:\,\,\,\,5k = \left( {180 - 6k} \right) + \left( {k + k} \right)\,\,\,\,\,\, \Rightarrow \,\,\,\,\,\,9k = 180\,\,\,\,\,\,\, \Rightarrow \,\,\,\,\,\,\left( {\rm{B}} \right)\)
We follow the notations and rationale taught in the
GMATH method.
Regards,
Fabio
_________________
Fabio Skilnik ::
GMATH method creator (Math for the GMAT)
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