\[S_{10} = \frac{2a_{1} + 9d}{2} \cdot 10 =\]
\[= 5 \cdot \left( 2a_{1} + 9d \right)\]
\[a_{1} = 5;d = 3:\]
\[S_{10} = 5 \cdot (2 \cdot 5 + 9 \cdot 3) =\]
\[= 5 \cdot 37 = 185.\]