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