Question

A polar bear migrates north durning winter to hunt for its food on sea ice. The Daily average temperature is 3c for every 100km traveled. At the start of the bears journey, the temperature is 2c. What is the temperature after 200km of its journey.

Answer 1

The temperature starts at 2°C, and decreses by 3°C for each 100km. After 200km, the temperature will descrese by 3°C twice. So the temperature after theses 200 km is:

$T=2-3\cdot\frac{200}{100}=2-3\cdot2=2-6=-4$

Or, -4°C.