Express -40 degree C in degree F.Multiple Choice: A) -72 degree F B) -54 degree F C) 40 degree F D) 4.4 degree F

In centigrade system of measuring temperature (C), melting of ice/water  is taken as 0 C, and 1/100 division of difference in temperature of melting of ice and boiling of water is taken as 1 degree. In Fahrenheit system of measuring temperature (C), melting of ice/water  is taken as 32 C, and 1/180 division of difference in temperature of melting of ice and boiling of water is taken as 1 degree.This means magnitude of each degree F is equal to 9/5 times degrees C.

Thus we can convert any temperature in Fahrenheit in to centigrade using the following formula:

F = C*9/5 + 32

Therefore when C = -40, F is given by:

F = -40*9/5 + 32 = -72 + 32 = - 40

Answer:

- 40 C = - 40 F

None of the multiple choices given correspond to this answer.

Perhaps, by mistake, the value given in choice C) is 40 degrees F instead of -40 degrees F.