Question

A cyclist rides her bike at a speed of 15 miles per hour. What is this speed in kilometers per hour? How many kilometers will the cyclist travel in 5 hours? In your computations, assume that I mile is equal to 1.6 kilometers. Do not round your answers. Speed: Distance traveled in 5 hours:

Answer 1

Given: The cyclist rides her bike at a speed of 15 miles per hour

To Determine: The speed in kilometers per hour and the kilometers cycles in 5 hours

Solution

Please note that 1 miles equal to 1.6kilometers. Let us convert 15miles to kilometers as shown below

`\begin{gathered} 1miles=1.6kilometers \\ 15miles=15*1.6kilometers \\ 15miles=24kilometers \end{gathered}`

Therefore the speed of 15miles per hour is equivalent to 24kilometers per hour

The kilometers travelled in 5 hours would be

`\begin{gathered} distance=speed* time \\ speed=24kilometers-per-hour \\ time=5hours \\ distance=24*5 \\ distance=120kilometers \end{gathered}`

Hence, the speed in kilometers per hour is 24 kilometers per hour,

And the kilometers travelled in 5 hours is 120 kilometers