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From midnight to
8:00am, the temperature dropped
0.55^(@)C each hour. If the temperature at
8:00 am was
4.6^(@)C, what was the temperature at midnight?
Answer:
^(@)C

From midnight to $8: 00 \mathrm{am}$ , the temperature dropped $0.55^{\circ} \mathrm{C}$ each hour. If the temperature at $8: 00$ am was $4.6^{\circ} \mathrm{C}$ , what was the temperature at midnight? $\newline$ Answer: $\square$ ${ }^{\circ} \mathrm{C}$

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Add, subtract, multiply, or divide two decimals: word problems

Full solution

Q. From midnight to

8: 00 \mathrm{am}

, the temperature dropped

0.55^{\circ} \mathrm{C}

each hour. If the temperature at

8: 00

am was

4.6^{\circ} \mathrm{C}

, what was the temperature at midnight?

\newline

Answer:

\square

{ }^{\circ} \mathrm{C}

Calculate total temperature drop: Determine the total temperature drop from midnight to $8$ : $00$ am. Since the temperature drops $0.55\,^\circ\mathrm{C}$ each hour and there are $8$ hours from midnight to $8$ : $00$ am, we multiply the hourly temperature drop by the number of hours. Calculation: $0.55\,^\circ\mathrm{C}/\text{hour} \times 8\,\text{hours} = 4.4\,^\circ\mathrm{C}$ total drop.
Find temperature at midnight: Calculate the temperature at midnight. $\newline$ To find the temperature at midnight, we add the total temperature drop to the temperature at $8$ : $00$ am. $\newline$ Calculation: $4.6\,^\circ\mathrm{C} + 4.4\,^\circ\mathrm{C} = 9.0\,^\circ\mathrm{C}$ .

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