Question 48
Fractions, Decimals and ApproximationThe temperature in a chemical plant was −5°C at 2.00 a.m. The temperature fell by 6°C and then rose again by 7°C. What was the final temperature?
- A.−6°C
- B.−4°C
- C.4°C
- D.8°C
Show the answer and explanation
Answer: B (−4°C)
Explanation
−5 − 6 = −11°C, then −11 + 7 = −4°C.