Final answer:
Without the current temperature, we cannot calculate how many degrees it needs to rise to reach 68°F. For converting Fahrenheit to Celsius, the formula is C = (F - 32) x (5/9); 68°F is 20°C and 78°F is approximately 25.6°C.
Step-by-step explanation:
The question appears to be asking how much more the temperature must increase to reach a specific target temperature, given in degrees Fahrenheit. However, the current temperature is not provided in the question.
Assuming we knew the starting temperature, we could simply subtract it from 68°F to find the answer. This type of problem generally involves basic arithmetic and understanding of temperature scales, which falls under the category of Mathematics.
To address the part of the question about converting temperatures to the Celsius scale, we use the formula for converting Fahrenheit to Celsius: C = (F - 32) x (5/9). So, for a room temperature of 68.0°F in the winter, the calculation would be (68 - 32) x (5/9), which equals to 20°C.
Similarly, a summer room temperature of 78.0°F would convert to (78 - 32) x (5/9), resulting in approximately 25.6°C.