A) 39.6 km/hr.
B) 49.5 km/hr.
C) 33 km/hr.
D) 26.4 km/hr.
Correct Answer: C
Solution :
Let the speed of goods train be\[x\] kmph. \[\therefore \]Relative speed of train \[=(54-x)\,kmph.\] According to the question, Distance covered by goods train in 7 hours = Distance covered by train in 11 hours with relative speed. \[\Rightarrow \]\[7x=(54-x)\,11\] \[\Rightarrow \]\[7x+11x=54\times 11\] \[\Rightarrow \]\[18x=54\times 11\] \[\Rightarrow \]\[x=\frac{54\times 11}{18}=33\]kmphYou need to login to perform this action.
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