The temperature of a freezer is never greater than -2 degrees C. Yesterday the temperature was -10 degrees C, but it increased at a steady rate of 1.5 degrees C per hour. How long in hours and minutes did the temperature increase inside the freezer?
There is 8 deg between -10 and -2
rate=difference/time
time=difference/rate=8/1.5=5 1/3 hour or 5 hours 20 min
Thx @Bobpusrley
To find out how long it took for the temperature to increase inside the freezer, we can use the concept of rate of change.
We know that the temperature increased at a steady rate of 1.5 degrees Celsius per hour.
The initial temperature was -10 degrees Celsius, and we need to find out how long it takes for the temperature to reach -2 degrees Celsius.
To calculate the time it takes, we can set up the following equation:
Change in temperature = Rate of change * Time
-2 degrees Celsius - (-10 degrees Celsius) = 1.5 degrees Celsius/hour * Time
Simplifying the equation gives:
-2 degrees Celsius + 10 degrees Celsius = 1.5 degrees Celsius/hour * Time
8 degrees Celsius = 1.5 degrees Celsius/hour * Time
Now we can solve for Time:
Time = 8 degrees Celsius / 1.5 degrees Celsius/hour
Time ≈ 5.33 hours
To convert this into hours and minutes, we need to find the decimal part of the hours, which represents the additional minutes. Since 0.33 hours is equivalent to 19.8 minutes, we can say that the time it took for the temperature to increase inside the freezer was approximately 5 hours and 20 minutes.