A hummingbird moves its wings at a rate of 5400 wingbeats a minute. Write this rate in wingbeats per second.
5400 wingbeats per minute * 1 minute / 60 seconds = 5400/60 = 90 wingbeats per second
5400 wingbeats per minute * 1 minute / 60 seconds = 5400/60 = 90 wingbeats per second