Question

The temperature at 6 pm was 5 degrees Celsius above 0. If it increases at the rate of 3 degrees Celsius per hour until 2 pm, at what time would the temperature be 23 degrees Celsius above 0? What would be the temperature at 2 pm?

a) The temperature at 2 pm would be 15 degrees Celsius above 0.

b) The temperature at 2 pm would be 20 degrees Celsius above 0.

c) The temperature at 2 pm would be 23 degrees Celsius above 0.

d) The temperature at 2 pm would be 26 degrees Celsius above 0.

Answer 1

The temperature would be 23 degrees Celsius above 0 at 9:40 pm. The temperature at 2 pm would be 29 degrees Celsius above 0.

Step-by-step explanation:

To find the time when the temperature would be 23 degrees Celsius above 0, we need to calculate how many hours it takes for the temperature to increase by 23 degrees Celsius. We know that the temperature increases at a rate of 3 degrees Celsius per hour.

So, the number of hours it takes for the temperature to increase by 23 degrees Celsius is 23 / 3 = 7.67 hours.

Therefore, the temperature would be 23 degrees Celsius above 0 at 2 pm + 7.67 hours = 9:40 pm.

The temperature at 2 pm would be 5 degrees Celsius above 0 + (3 degrees Celsius per hour x 8 hours) = 5 + 24 = 29 degrees Celsius above 0.