The temperature at a mountain base camp was −4 degrees Celsius on Saturday. Sunday morning, the temperature was 2 degrees Celsius lower than what it was on Saturday. By Sunday evening, the temperature was 1 degree Celsius lower than what it was that morning. What was the temperature at the base camp Sunday evening?
To find the temperature at the base camp on Sunday evening, we need to subtract 1 degree Celsius from the temperature on Sunday morning.
Let's start by finding the temperature on Sunday morning. We know that Sunday morning's temperature was 2 degrees Celsius lower than Saturday's temperature, so we can subtract 2 degrees from the temperature on Saturday to find the temperature on Sunday morning.
Temperature on Sunday morning = Temperature on Saturday - 2 degrees
Given that the temperature on Saturday was -4 degrees Celsius, we substitute this value into the equation:
Temperature on Sunday morning = (-4) - 2 = -6 degrees Celsius
Now, let's find the temperature on Sunday evening. We are given that the temperature on Sunday evening was 1 degree lower than Sunday morning's temperature, so we subtract 1 degree from the temperature on Sunday morning.
Temperature on Sunday evening = Temperature on Sunday morning - 1 degree
Substituting the value of Sunday morning's temperature into the equation:
Temperature on Sunday evening = (-6) - 1 = -7 degrees Celsius
Therefore, the temperature at the base camp on Sunday evening was -7 degrees Celsius.