GMAT
Exam
Numerical Ability
Time Distance and Speed
Two trains X and Y are moving in opposite direction, one from station A to station B and the other from station B to station A. The train X reaches its destination i.e. station A in 14 hours and the train Y reaches its destination i.e. station B in 20 hours after the trains meet. If the speed of train X is 20 km per hour, then what is the speed of the train Y ?
Read Solution (Total 4)
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- If x,y are speed of trains X and Y and they meet at a distance p from B and distance q from A, then
p/x= q/y
and
p/y = 20; q/x= 14
and x= 20 kmph
solving these eqns and putting values , we get
y = 16.73 kmph - 12 years agoHelpfull: Yes(7) No(9)
- answer comes out to be sqrt(280)... create a diagram and solve...Garima's explanation is correct
- 12 years agoHelpfull: Yes(0) No(1)
- ans sqrt(280)
- 11 years agoHelpfull: Yes(0) No(0)
- 35km per hour
- 4 years agoHelpfull: Yes(0) No(0)
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