Answer: 1080
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Work Shown:
1 hour = 60 minutes
6 hours = 360 minutes .... multiply both sides by 6
(45 people)/(15 minutes) = (x people)/(360 minutes)
45/15 = x/360
45*360 = 15*x .... cross multiply
16200 = 15x
15x = 16200
x = 16200/15
x = 1080
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Another approach:
45 people can ride every 15 minutes. That means 180 people can ride every 60 minutes (multiply both values by 4). Or in other words, the ride can handle 180 people per hour.
Multiply that 180 by 6 to find out how many can ride in 6 hours
180*6 = 1080