05-09-2018
Mathematics

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A ruby throated humming bird flaps its wings 159 times in three seconds. How many times does the ruby throated humming bird beat its wings per second

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highwireact highwireact

05-09-2018

If it flaps its wings 159 times in 3 seconds, it'll be able to flap them 1/3 of that amount in 1 second, which would be 1/3 · 159 = 53 flaps per second.

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