A) 45 minutes
B) 2 hours
C) 90 minutes
D) 3 hours
Correct Answer: A
Solution :
A car takes one hour to cover a certain distance at\[~60\text{ }km/h\]. \[\Rightarrow \] Distance covered\[=60\text{ }km\] Let the required time be x h. Speed of the car and the time taken to travel a distance are inversely proportional. \[\therefore \] \[60:80\,\,:\,\,:\,\,x:1\] \[\Rightarrow \] \[x=\frac{60}{80}=\frac{3}{4}\] hour = 45 minutesYou need to login to perform this action.
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