the time taken by a train of length of 20 m moving with a speed of 60km/h to cross a station of length 100m is
a) 36/5 hr
b) 36/5 min
c) 36/5 s
d) 36 s
Answers
Answered by
1
Answer:
your answer is B I think so
Answered by
1
Answer:
Trains
Two trains, A and B, start from stations X and Y towards each other. they take 4 hours 48 minutes and 3 hours 20 minutes to reach Y and X respectively after they meet. If train A is moving at 45 km/ hr. , then the speed of the train B is
A) 60 km/hr
B) 64.8 km/hr
C) 54 km/hr
D) 37.5 km /hr
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/hr
Explanation:
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