Stations X and Y are 180 km distance away. Two trains P and Q start simultaneously from X, at speeds 15 km/h and 10 km/h to reach Y. While returning from Y to X, the trains
meet at station Z Find the distance travelled by Q when both trains meet. (Assume that both trains are returning immediately from Y)
36 kms
144 kms
132 kms
150 kms
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Answer:
Correct Answer:
C) 54 km/hr
Description for Correct answer:
In these type of questions use the given below formula to save your valuable time.
S1S2=T1T2−−−√
where S1, S2 and T1, T2 are the respective speeds and times of the objects.
45S2=313÷445−−−−−−−√
S2=45×65
= 54 km/hr
∴Required speed = 54km/
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