Need assistance on this word problem...

Singer I.M. Great publicly promised each of her fans an autographed photo of herself. The response was bigger than expected: all 220,000,000 people in the U.S. wrote for a picture(even her own brother). Calculate the number of hours I.M will need to sign all photographs, if she signs 1 picture every 3 seconds.

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1. 1 picture in 3 seconds
220,000,000 pictures in 3(220,000,000) seconds

660,000,000 seconds
There are 3600 seconds in an hour, so divide by that.

(Drop the extra 2 zeroes on each number.)
6,600,000 / 36

It will take her 183,333.33 hours.

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posted by Michael

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