Question

If we changed our speed limit signs to metric, what would probably replace the following? (Enter your answers to the nearest km/h.)(a) 30 mi/h___ km/h(b) 75 mi/h_____ km/

Answer 1

Given:

We have changed our speed limit signs to metric.

To find:

(a) 30 mi/h in km/h

(b) 75 mi/h in km/h

Step-by-step explanation:

We know,

`1\text{ mi=1.61 km}`

(a)

So,

`\begin{gathered} 30\text{ mi/h} \\ =30*1.61\text{ km/h} \\ =48.3\text{ km/h} \end{gathered}`

Hence,

`30\text{ m/h=48.3 km/h}`

b)

Now,

`\begin{gathered} 75\text{ mi/h} \\ =75*1.61\text{ km/h} \\ =120.75\text{ km/h} \end{gathered}`

Hence,

`75\text{ mi/h=120.75 km/h}`