Question

The current temperature is 54°F. It is

expected to rise 2.5°F each hour. In how
many bours will the temperature be 84°F?

Answer 1

12 hours

Explanation:

Every 2 hours the temp. will rise 5°F, thus that means in 6 hours the room will rise exactly 30°F. Since we muliplied 2.5 by 2 to get 5°F per 2 hours, we have to multiply 6 by 2, to get 12 hours in total. Or you can just do repeated addition until you get to 84°F.