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Q.
Two trains A and B start simultaneously in the opposite direction from two points P and Q and arrive at their destinations 16 and 9 hours respectively after their meeting each other. At what speed does the second train B travel if the first train travels at 120 km/h
A.
90 km/h
B.
160 km/h
C.
67.5 km/h
D.
None of these
View Answer
Correct choice: B
Explanation:
s1/s2=√ t2/t1 ⇒120/s2=√ 9/16=3/4 ⇒s2=160km/h
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