$1^{\circ }-4\min$

$2\text{godz.}18\min =2\cdot 60\min +18\min =120\min +18\min =138\min$

$1^{\circ }-4\min$

$\text{x }-138\min$

$4\min \cdot \text{x}=138^{\circ }\cdot \min$

$4\min \cdot \text{x}=138^{\circ }\cdot \min |:4\min$

$\text{x }=34,5^{\circ }=34^{\circ }30^{\prime }$