A) 1 hour 30 minutes
B) 1 hour 40 minutes
C) 2 hours 40 minutes
D) 2 hours
Correct Answer: D
Solution :
Speed of the car \[=60\text{ }km/h.\] Time taken \[=3\text{ }h\] Speed is increased to\[90\text{ }km/h\]. Time taken is inversely proportional to speed. Let the time taken to cover the distance travelling at\[90\text{ }km/h\] be x h. Then, \[x=\frac{60}{90}\times 3=2\]hours.You need to login to perform this action.
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