Tim decides to do a movie marathon. The first movie is 2 hours long. The next movie is 50% longer. And the last movie is 1 hour shorter than the combined time of the previous 2 movies. How long was his movie marathon?
Let's be accurate as possible and think first.
9
The second movie was 2 *.

5 = 1` hour longer than the first movie.

So the second movie was 2 + 1 = 3 hours long.

That means the first two movies had a combined time of 3 + 2 = 5 hours.

So the last movie had a length of 5 - 1 = 4 hours.

That means the marathon lasted 5 + 4 = 9 hours.

.

So, the final answer is 9