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# Triangle Sum Theorem: Word Problem/Solving for a Variable

GEOM-NXEFMY

In $\triangle SKY$, the $m\angle K$ is five more than three times $m\angle S$. The $m\angle Y$ is five less than twice the $m\angle K$.

Find the $m\angle Y$.

A

$17$

B

$51$

C

$105$

D

$107$

E

$112$