Question

A hummingbird can travel up to 15 meters per second.What is the hummingbird's speed in miles per hour?1 mile ≈ 1609 meters Enter your answer, as a decimal to the nearest tenth, in the box. mph

Answer 1

The speed of the hummingbird is giving as

`\text{ 15meter/seconds }`

Recall that

`1\text{mile}\approx1609\text{ meters }`

Hence

`\begin{gathered} 15\text{meters will be }(15)/(1609)miles\text{ } \\ \\ \end{gathered}`

Recall that

`3600\text{ seconds =1hour }`

Hence

the speed of the hummingbird in miles per hour will be

`\begin{gathered} (15)/(1609)*(3600)/(1)=(54000)/(1609)=33.56\text{miles per hour } \\ \\ \end{gathered}`

Therefore the speed in miles per hour to the nearest tenth is 33.6mph