A) \[40{}^\circ \]
B) \[37{}^\circ \]
C) \[-40{}^\circ \]
D) \[80{}^\circ \]
Correct Answer: C
Solution :
Celsius temperature and Fahrenheit temperature (F) are related as \[\frac{C}{5}=\frac{F-32}{9}\] Putting \[C=F=\theta ,\]we get \[\therefore \] \[\frac{\theta }{5}=\frac{\theta -32}{9}\] \[9\theta =5\theta -160\] \[4\theta =-160\] \[-40{}^\circ C=-40{}^\circ F\]
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