i looked on the top of my book and it says 75 years.

Answer 1

OK. Let's take 75 years.

Here's your original problem:

it is estimated that in an average lifetime a person watches about 105,000 hours of TV.

at this rate, about how many hours per day does a person watch TV?

75 * 365 * 24 = 657,000 hours

105,000 / 657,000 = 0.159 hours = about 10 minutes a day.

This doesn't seem right, does it?

Please check your figures again or ask your teacher to help you.

Answer 2

thank you anyways