Question

Studies show that a typical giant hummingbird can flap its wings once in 0.08 of a second.

a. While flying for 7.2 seconds, how many times will a typical giant hummingbird flap its wings?
b. A ruby-throated hummingbird can flap its wings 4 times faster than a giant hummingbird. How many times will a ruby-throated hummingbird flap its wings in the same amount of time?

Answer 1

a. 90

b. 360

Explanation:

The time taken by humming bird to flap its wings= 0.08 sec

by flying 7.2 seconds a typical giant hummingbird flap its wings
`(7.2)/(0.08)` times

= 90 times

Since, A ruby-throated hummingbird can flap its wings 4 times faster than a giant hummingbird, it will flap its wings in every 0.02 sec

so in 7.2 seconds it will flap
`(7.2)/(0.02)` times = 360 times