Question

A tortoise traveled 1/6 kilometer in 7/8 hour. What was it’s average speed in kilometers per hour (kph)?

Answer 1

The average speed of the tortoise is
`(4)/(21)` kmph

Solution:

Given that, A tortoise traveled
`(1)/(6)` kilometer in
`(7)/(8)` hour

To find: Average speed in kilometers per hour

The relation between speed distance and time is given as:

`\text { Distance travelled }=\text { speed } * \text { time taken }`

Here, distance travelled =
`(1)/(6)` kilometers and time taken =
`(7)/(8)` hours

Now, let us substitute the values in distance formula

`\begin{array}{l}{(1)/(6) \mathrm{km}=\text { average speed } * (7)/(8) \mathrm{h}} \\\\ {\text { Average speed }=(1)/(6) * (8)/(7)} \\\\ {\text { Average speed }=(1)/(3) * (4)/(7)=(4)/(21)}\end{array}`

Hence, the average speed of the tortoise is
`(4)/(21)` kmph