A) 16km/hr
B) 18km/hr
C) 12km/hr
D) 14km/hr
Correct Answer: C
Solution :
Distance already covered\[=\frac{3}{4}\times 12=9\,\,km\] Time spent\[=\frac{2}{3}\times 45\]min. \[=30\]min. Distance left\[=(12-9)\,\,km=3\,\,km\] Time left\[=(45-30)\min =15\min \] \[\therefore \]Required speed \[=\frac{3}{15/60}km/hr\]. \[=12\,\,km/hr\]You need to login to perform this action.
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