Question

In a local city, the temperature at noon is Negative 3 degrees Celsius. The temperature is expected to decrease by 2.5 degrees Celsius each hour until the temperature reaches Negative 18 degrees Celsius. How many hours will it take for the temperature to reach Negative 18 degrees Celsius?

Answer 1

Answer:

6 hours

Step-by-step explanation:

18+3 = 15

18/2.5=6

Answer 2

Answer:

It takes 6 hours to reach -ve 18 degrees Celsius.

Step-by-step explanation:

1. The temperature at noon means time is 12 PM and temperature is -3 degree celsius

2. The temperature decreases by 2.5 degrees each hour means it starts at noon i.e 12 PM is 12 PM is -3,  1 PM is -5.5, 2 PM is -8.0,  3 PM is -10.5, 4 PM is -13.0, 5 PM is -15.5, 6 PM is -18.0

3. The number of hours it take usually is 6 hours in order to reach -ve 18 degree celsius i.e., 12 PM to 6 PM in the evening.

4. Total number of hours here is 6 hours.