If the temperature starts at\[\text{-4 }\!\!{}^\circ\!\!\text{ C}\], rises by \[\text{4 }\!\!{}^\circ\!\!\text{ C}\], falls by \[\text{3 }\!\!{}^\circ\!\!\text{ C}\]and then rises again by \[\text{6 }\!\!{}^\circ\!\!\text{ C}\]then what would be the final temperature?
A) \[\text{6 }\!\!{}^\circ\!\!\text{ C}\]
B) \[\text{0 }\!\!{}^\circ\!\!\text{ C}\]
C) \[\text{2 }\!\!{}^\circ\!\!\text{ C}\]
D) \[\text{3 }\!\!{}^\circ\!\!\text{ C}\]
Correct Answer: D
Solution :
\[\left( \text{-4 }\!\!{}^\circ\!\!\text{ C} \right)\text{ + }\left( \text{4 }\!\!{}^\circ\!\!\text{ C} \right)\text{ + }\left( \text{-3 }\!\!{}^\circ\!\!\text{ C} \right)\text{ + }\left( \text{6 }\!\!{}^\circ\!\!\text{ C} \right)\text{ =3 }\!\!{}^\circ\!\!\text{ C}\]
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