Question

The temperature of a freezer started at 18°C. After cooling for a few hours, the freezer had a temperature of

-12°C. What is the difference between the new, colder temperature and the original temperature?

Answer 1

30 C

Explanation:

How to find difference: t1 - t2

Subsitute:

18 - (-12)

Double negative signs make a positive.

18 + 12

30