📄 07 - SET-4 (Trains Advanced), p.7
07 - SET-4 (Trains Advanced), p.7
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Use the formula S1 / S2 = √(T2 / T1) when two trains meet and continue to their destinations.
- Given two Time values: Find the Speed Ratio.
- Given two Speed values: Find the Time Ratio.
- Given two Time values and one Speed value: Find the other Speed value.
- Given two Speed values and one Time value: Find the other Time value.
A and B are traveling towards each other from the points P and Q respectively. After crossing each other, A and B take 6(1/8) hours and 8 hours, respectively, to reach their destinations Q and P, respectively. If the speed of B is 16.8 km/h, then the speed (in km/h) of A is:
(A) 20.8
(B) 19.8
(C) 19.2
(D) 20.4