Question

At sun rise, the outside temperature is 3° below
zero. By lunch time, the temperature rose by
15° and then fell by 5° by night. What was the
temperature at the end of the day?​

Answer 1

7°c. will be the correct answer if you are asking the temperature at night.

Answer 2

at sun rise, temp = -3°

after lunch time temp.= -3+15°

after lunch time temo. = 12°

at end of the day/by night= 12-5 = 7°