Question

The temperature at a mountain base camp was −2 degrees Celsius on Thursday. Friday morning, the temperature was 1 degree Celsius lower than what it was on Thursday. By Friday evening, the temperature was 3 degrees Celsius lower than what it was that morning. What was the temperature at the base camp Friday evening? −9 degrees Celsius −8 degrees Celsius −7 degrees Celsius −6 degrees Celsius

Answer 1

The answer is -6 C

Answer 2

Thursday: -2 deg C

Friday morning, 1 deg C lower: -2 deg C - 1 deg C = -3 deg C

Friday evening: 3 deg C lower: -3 deg C - 3 deg C = -6 deg C

Answer: -6 deg C