1.

In the given figure \[\mathbf{AB}\parallel \mathbf{CD}\parallel \mathbf{EF}\]. If \[\mathbf{5x}=\mathbf{4y}\] and \[\mathbf{z}=\mathbf{y}+\mathbf{10}\], then the value of w is

A.  \[{{60}^{{}^\circ }}\]                       
B.  \[{{50}^{{}^\circ }}\]
C.  \[{{90}^{{}^\circ }}\]                                   
D.  \[{{70}^{{}^\circ }}\]
Answer» E.


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