Answer:65%
Explanation:The total energy supplied to the television is:
100 J
The energy that is converted into light and sound is:
25 J (light) + 10 J (sound) = 35 J
Therefore, the energy lost as heat is:
100 J - 35 J = 65 J
To find the percentage of energy supplied to the television that is lost as heat, we can use the formula:
percentage = (energy lost as heat / total energy supplied) x 100%
percentage = (65 J / 100 J) x 100% = 65%
Therefore, 65% of the energy supplied to the television is lost as heat.