A) \[~-\,{{40}^{o}}\]
B) \[~{{40}^{o}}\]
C) \[~-\,{{30}^{o}}\]
D) \[~\,{{30}^{o}}\]
Correct Answer: A
Solution :
Let the common temperature is \[x\] on both scales. \[\frac{C}{5}=\frac{F-32}{9}\] Put \[C=F=x\] \[\therefore \] \[\frac{x}{5}=\frac{x-32}{9}\] or \[9x=5x-160\] or \[4x=-160\] \[\therefore \] \[x=-{{40}^{o}}\]You need to login to perform this action.
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