Given:
Temperature range in Fahrenheit:
68°F ≤ F ≤ 77°F
Conversion formula:
\( F = \frac{9}{5}C + 32 \)
Step 1: Convert 68°F to Celsius
\( 68 = \frac{9}{5}C + 32 \)
\( 68 - 32 = \frac{9}{5}C \)
\( 36 = \frac{9}{5}C \)
\( C = \frac{36 \times 5}{9} = 20 \)
Step 2: Convert 77°F to Celsius
\( 77 = \frac{9}{5}C + 32 \)
\( 77 - 32 = \frac{9}{5}C \)
\( 45 = \frac{9}{5}C \)
\( C = \frac{45 \times 5}{9} = 25 \)
Final Answer:
The required temperature range in degree Celsius is:
20°C ≤ C ≤ 25°C