Answer:
The temperature was -9°C on Tuesday evening.
Step-by-step explanation:
Given,
The temperature on monday = -3°C,
Also, on tuesday morning, the temperature was 2 degrees Celsius lower than it was on Monday,
So, the temperature on tuesday morning = -3°C - 2°C = -5°C,
And, on tuesday evening, the temperature was 4 degrees Celsius lower than it was that morning,
Hence, the temperature on tuesday evening = -5°C - 4°C = -9°C