SOLUTION: If a Ferris wheel takes 45 seconds to make a complete rotation, how many rotations will it complete in 3 hours?

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Question 627094: If a Ferris wheel takes 45 seconds to make a complete rotation, how many rotations will it complete in 3 hours?
Found 2 solutions by stanbon, jim_thompson5910:
Answer by stanbon(75887) About Me  (Show Source):
You can put this solution on YOUR website!
If a Ferris wheel takes 45 seconds to make a complete rotation, how many rotations will it complete in 3 hours?
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3 hrs = 3*60*60 = 10800 seconds
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# of rotations = 10800/45 = 240
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Cheers,
Stan H.
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Answer by jim_thompson5910(35256) About Me  (Show Source):
You can put this solution on YOUR website!
45 seconds: 1 rotation

1 second: 1/45 rotations

60*1 second: 60*(1/45) rotations

60 seconds: 60/45 rotations

60 seconds: 4/3 rotations

1 minute: 4/3 rotations

60*1 minute: 60*(4/3) rotations

60 minutes: 240/3 rotations

60 minutes: 80 rotations

1 hour: 80 rotations

3*1 hour: 3*80 rotations

3 hours: 240 rotations

So in 3 hours, it will complete 240 rotations

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