1. The problem statement, all variables and given/known data A Celsius and a Fahrenheit thermometer are dipped in boiling water. The temperature of the water is brought down until the Fahrenheit thermometer reads 140°. So, the fall in temperature registered by Celsius scale is: 30 40 50 80 2. Relevant equations F=(C*(9/5))+32 C=(F-32)*(5/9) 3. The attempt at a solution Boiling water is 212 F. 212-140=72. Convert 72 F to C and I get 22.223 C. My answer doesn't match any of the choices.