On Hold
Cooper called a website publishing company. The answering machine tells him his call will be answered in the order received. Cooper is the 10th person to talk with the company. The man currently talking talks for seven minutes. The second man talks for double the amount of time the first man talks for. After this, the third man talks for three times the amount of the second man. The fourth man talks for 4 times the amount of the 3rd man, and so on. How long in minutes does Cooper have to wait for his call to be answered?
The answer is 2540160.
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