## 41. Thermometer

A faulty thermometer shows a temperature of $+1^{\circ}$ in freezing water and $+105^{\circ}$ in the steam of boiling water. Currently, this thermometer shows $+17^{\circ}$; what is the actual temperature?
41. The true temperature is

$$
\frac{17-1}{(105-1) / 100} \approx 15.38^{\circ} \mathrm{C}
$$