Elitmus
Exam
Numerical Ability
Time Distance and Speed
if L1 and L2 are length of two train.
If they are moving with speed of V1&V2 km/hr respectivly in opposit direction they met at t sec.If they are moving in same direction the faster train cross slower train in T sec.If the ratio T/t=11sec.What is the ratio of V1 &V2.
Read Solution (Total 5)
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- for trains moving in opp direction
t=(L1+L2)/(V1+V2)
for trains moving in same direction
T=(L1+L2)/(V1-V2)
by dividing the eq
V1/V2=6/5. - 10 years agoHelpfull: Yes(28) No(0)
- There is small mistake in question the ques should be "in opposite direction they cross each other (instead of met) at t sec"
then
6/5 is the ans considering v1 > v2 - 10 years agoHelpfull: Yes(3) No(0)
- v1/v2=5/6 or 6/5
- 10 years agoHelpfull: Yes(1) No(6)
- question needs to be modified i think
they cross each other in t seconds while travelling in opposite direction
then,
t=(l1+l2)/(v1+v2)
T=(l1+l2)/(v1-v2)
eq2/eq1
v1/v2=6/5 - 10 years agoHelpfull: Yes(1) No(0)
- Ans-6/5
in opposite direction speed adds up
in opposite direction speed minus
- 8 years agoHelpfull: Yes(0) No(0)
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