He walks 10 meters in 4 seconds what is his walking rate
The answer to the motobu choice is "D"
i looked it up on the internet
10 m/ 4s = 5/2 = 2.5 meters/second
however perhaps you want kilometers and hours
That is
2.5*10^-3 km /second * 3600 seconds/hr = 2.5*3.6 = 9 km/hr