waecmaths question:
The temperature in a chemical plant was –5oC at 2.00am . The temperature fell by 6oC and then rose again by 7oC. What was the final temperature?
Option A:
–6oC
Option B:
–4oC
Option C:
4oC
Option D:
8oC
waecmaths solution:
The final temperature = –5oC – 6oC +7oC = –4oC
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