The relation between Celsius and Fahrenheit scales is:C/100 = (F−32)/180At what temperature do both scales give the same reading?
Correct answer: B. -40
- A. -100
- B. -40
- C. -180
- D. -273
Explanation
Water boils at temperatures=100°C, 212°F and water freezes at =0°C,32°F. 100-°C/100-0-212-°F/212-32 In this formula, 100-boiling point of water in °C and 0° is freezing temperature of water in °C and the same goes for 212 and 32 for Fahrenheit scale. And after simplifying this formula we get our desired formula °F 32 +1.8° C. Now we have to calculate which temperature has equal value in Celsius and Fahrenheit. So let that temperature be x becomes x = 32 +1.8x Now solving this simple equation we get the value of x =-40°. As it is a numerical, it can have only one possible answer.
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