The temperature in a chemical plant was -5oC at 2.00 am. The temperature fell by 6oC and then rose again by 7oC. What was the final temperature?

A.

-6oC

B.

-4oC

C.

4oC

D.

8oC

View answer & explanation

Correct answer is B

Temperature = -5oC

It fell by 6oC = -5oC - 6oC

= -11oC

Then rose by 7oC = -11 + 7

= -4oC (final temperature)

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