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Yesterday the temperature at noon was
20.4^(@)F. By midnight, it had gone down by
28.9^(@)F. What was the temperature at midnight?
Answer:
^(@)F

Yesterday the temperature at noon was $20.4^{\circ} \mathrm{F}$ . By midnight, it had gone down by $28.9^{\circ} \mathrm{F}$ . What was the temperature at midnight? $\newline$ Answer: $\square$ ${ }^{\circ} \mathrm{F}$

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Solve proportions: word problems

Full solution

Q. Yesterday the temperature at noon was

20.4^{\circ} \mathrm{F}

. By midnight, it had gone down by

28.9^{\circ} \mathrm{F}

. What was the temperature at midnight?

\newline

Answer:

\square

{ }^{\circ} \mathrm{F}

Identify Initial Temperature: Identify the initial temperature and the temperature change. $\newline$ The initial temperature at noon was $20.4\degree F$ , and the temperature decreased by $28.9\degree F$ by midnight.
Calculate Temperature at Midnight: Calculate the temperature at midnight by subtracting the temperature change from the initial temperature. $\newline$ Temperature at midnight = Initial temperature - Temperature change $\newline$ Temperature at midnight = $20.4^\circ\text{F} - 28.9^\circ\text{F}$
Perform Subtraction: Perform the subtraction to find the temperature at midnight. $\newline$ Temperature at midnight = $20.4\degree F - 28.9\degree F$ $\newline$ Temperature at midnight = $-8.5\degree F$

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