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Celsius and Fahrenheit thermometers in boiling water, Fahrenheit reads 140: Celsius reading or fall

The same question, asked 2 times: 21 Apr 2025 S1*, 13 Apr 2026 S1. Every wording below, oldest first.

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  1. Question 1

    21 Apr 2025 S1

    33
    A centigrade and Fahrenheit thermometer are dipped in boiling water. The water temperature is lowered until the Fahrenheit temperature observed is 140∘F140^{\circ}F. At that time the temperature registered by the centigrade thermometer is

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  2. Question 2

    13 Apr 2026 S1

    113
    A celsius and a Fahrenheit thermometer are dipped in boiling water. The temperature of water is lowered until the Farenheit thermometer shows 140∘140^\circ. What is the fall in temperature on the Celsius thermometer?

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