Question

I’m a bit stuck right now

Answer 1

Given:

The speed of driver is 99 miles/hour.

The objective is to find the speed in kilometers/hour and kilometers/minute.

Step-by-step explanation:

Conversion of miles/hour to kilometers/hour:

Since it is given that 1 mile = 1.61 kilometers.

`\begin{gathered} 99\text{ miles/hour=99 miles/hour(}\frac{1.61\text{ kilometers}}{1\text{ miles}}\text{)} \\ =159.39\text{ kilometers/hour} \\ \approx159.4\text{ kilometers/hour} \end{gathered}`

Conversion of kilometers/hour to kilometers/minute:

Since, it is given that 1 hour = 60 minutes.

`\begin{gathered} 99\text{ miles/hour=99miles/hour(}\frac{1.61\text{ kilometers}}{1\text{ miles}})(\frac{1\text{ hour}}{60\text{ minutes}}) \\ =2.6565\text{ kilometers/minute} \\ \approx2.7\text{ kilometers/minute} \end{gathered}`

Hence, speed is equivalent to 159.4 kilometers/hour or 2.7 kilometers/minute.