Question

a certain freezing point requires that room temperature be lowered from 60 degree at the rate of 4 degree celcius per hour. what will be the room tempurature 18 hours after the process begins

Answer 1

1 hour=60
2hours=60-4=56
3hours=56-4=52
4 hours=52-4=48
5hours=48-4=44
6hours=44-4=40
7hours=40-4=36
8 hours=36-4=32
9hours=32-4=28
10hours=28-4=24
11hours=24-4=20
12hours=20-4=16
13hours=16-4=12
14hours=12-4=8
15hours=8-4=4
16hours=4-4=0
17hours=0-4=-4
18hours=-4-4=-8

answer is -8.