Browsing through Mr. Fox's old scientific notes, Bruce Wayne encounters a secret temperature scale, which Mr. Fox called Z, in order to keep the Batmobile's technology a secret. On that scale, the freezing and the boiling points of water were recorded to be -70Z and 780Z, respectively. The records instruct to maintain the coolant temperature at -240Z for top speed. Mr. Wayne, naturally comfortable with the Fahrenheit scale due to his American upbringing, needs to calculate the coolant temperature in 0F. Help him choose the correct value.
Browsing through Mr. Fox's old scientific notes, Bruce Wayne encounters a secret temperature scale, which Mr. Fox called Z, in order to keep the Batmobile's technology a secret. On that scale, the freezing and the boiling points of water were recorded to be -70Z and 780Z, respectively. The records instruct to maintain the coolant temperature at -240Z for top speed. Mr. Wayne, naturally comfortable with the Fahrenheit scale due to his American upbringing, needs to calculate the coolant temperature in 0F. Help him choose the correct value.
The correct option is B -4℉
Let's list what we know -
For any general scale with lower and upper fixed points labeled as TL and Tu, and a measured temperature T, the ratio 
will be the same, no matter what scale it is.
Extending that to 0Fand 0Z(in question), we have -
-4℉
Let's list what we know -
For any general scale with lower and upper fixed points labeled as TL and Tu, and a measured temperature T, the ratio will be the same, no matter what scale it is.
Extending that to 0Fand 0Z(in question), we have -
