A) \[5\,km\,{{h}^{-1}}\]
B) \[10\,km\,{{h}^{-1}}\]
C) \[15\,km\,{{h}^{-1}}\]
D) \[20\text{ }km\text{ }{{h}^{-1}}\]
Correct Answer: D
Solution :
Since, the distance covered is in minutes and we need the speed in hours, we have to convert the time first. \[\text{30}\,\text{min}\,\text{=}\,\,\frac{\text{1}}{\text{1}}\,\,\text{hour}\] \[\text{Speed=}\frac{Dis\tan ce}{Time}=\frac{10}{1/2}=20\,km\,{{h}^{-1}}\]
You need to login to perform this action.
You will be redirected in
3 sec
