A) 15 minutes
B) 25 minutes
C) 50 minutes
D) 1 hr. 30 minutes
Correct Answer: C
Solution :
Fixed time \[=\frac{20}{5}\]hour-40min \[=4\,\,hour-40\,\,min\] \[=3\,\,hour-20\,\,min\] When, he walks at 8 km/hr Then, time to reach \[=\frac{20}{8}\] = 2 hour 30 min. Hence, he will reach \[=3\,\,hour\,\,20\,\,min-2\,\,hour\,\,30\,\,min.\] = 50 min. before.You need to login to perform this action.
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