If there are 9000 seconds in 2.5 hours, how many hours are there in 13,500 seconds?

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If there are 9000 seconds in 2.5 hours, how many hours are there in 13,500 seconds?

Setup a proportion of hours to seconds where h is the number of hours in 13,500 seconds
2.5/9000 = h/13500

Using our proportion calculator we get:
h = 3.75 hours