Capgemini
Company
Numerical Ability
Time Distance and Speed
Two trains for Palwal leave Kanpur at 10 a.m and 10:30 am and travel at the speeds of 60 Kmph and 75 Kmph respectively. After how many kilometers from Kanpur will the two trains be together?
Read Solution (Total 12)
-
- Let two train meet at X km distance.
Time taken by first train to cover X km=x/75 h
Time taken by 2nd train to cover X km=x/60 h
Now, x/60 - x/75=1/2
thus, x=150. - 8 years agoHelpfull: Yes(80) No(6)
- If two trains leave say 'P' for 'Q' at time 't1' 't2' and with speeds 'a' and 'b' ,
Then the distance D from p where they meet, is given by
D = diff in time (t2-t1) X a*b / b-a
There u go ... - 9 years agoHelpfull: Yes(33) No(18)
- relative speed =75-60=15kmph
in half an hour 1 train travelled 30km.
to reach I st train 2 nd train need 30/15=2 hours.
in two hours 2 nd train travelled 75*2=150km - 9 years agoHelpfull: Yes(23) No(3)
- K----------------------------------------------------------P
T11 10:00 60 km/h
TT12 10:30 75 km/h
Suppose they meet after t time from 10.00
75(t- 1/2)=t *60
t=2.5
Distance travelled till meeting=75*(2.5-.5)=150 km - 9 years agoHelpfull: Yes(13) No(8)
- As we know that Train A and Train B leaves from the same station ,
simple trick for solving that is find the factors of both .
5 |60 , 75
------------------
3 | 12 , 15
------------------
4 | 4 , 5
-----------------
5 | 1 , 1
(5*3*4*5 ) / 2= 150 - 7 years agoHelpfull: Yes(9) No(3)
- travelled distance is same so
60*t=75*(t-1/2)
t=5/2
s=60*5/2=150 - 6 years agoHelpfull: Yes(5) No(0)
- x+1x=3
⟹(x+1x)2=9
⟹x2+1x2+2=9
⟹x2+1x2=7
Again,
(x+1x)3=27
⟹x3+1x3+3(x+1x)=27
⟹x3+1x3=27−3×3=18
Now,
(x2+1x2)(x3+1x3)=(x5+1x5)+(x+1x)
⟹18×7=x5+1x5+3
⟹x5+1x5=18×7−3=123 - 8 years agoHelpfull: Yes(0) No(16)
- 2.5 dm = .0.25m
19.25 m × 2 m = 38.5 m^2
12.50 m × 2 m = 25 m^2
Since they will overlap therefore we have to subtract 2×2 m^2
Therefore answer will be
(25 + 38.5 - 4 ) × 1.32
I.e 78.65 - 7 years agoHelpfull: Yes(0) No(2)
- Solving logically .
When train A = 30
Train B = 0
Train A = 31
Train B = 1.25
Train A = 32
Train B = 2.5
Train A = 34
Train B = 5
Similarly @ a at 38 and B at 10
Now if we subtract 5 from 34 that will be 29.
The 10 from 38 ie 28...and this will continue. When it will be 0? After 30 steps.
Therefore 5 × 30 will come 150. Or 30 (train A)+ (30×4(common d)) will also give 150. - 7 years agoHelpfull: Yes(0) No(0)
- First train start in 10 am and 2nd train start train 10:30
So the 1st train cover 30 km distance in 10:30.
Now, both train time are equal
Let the train distance = x
time 1= time 2
x-30/60=x/75
So x=150 km - 5 years agoHelpfull: Yes(0) No(0)
- A-10am
B-10:30 am
Speed(A)=60kmph So when B starts A would have covered 30km and when they meet they will have same time. let x be the distance covered by b when they meet.
(30+x)/60=x/75
x=150 km. - 5 years agoHelpfull: Yes(0) No(0)
- S1*S2*t / S1-S2
(60*75*1/2 )/60-75
(60*75*1/2)/15
60*5*1/2
60*2.5
150.0km - 5 years agoHelpfull: Yes(0) No(0)
Capgemini Other Question