Capgemini
Company
Numerical Ability
Time Distance and Speed
A train runs first half of the distance at 40km/hr. and the remaining half at 60 km/hr.what is the average speed for the entire journey?
Read Solution (Total 10)
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- Average Speed=(2*40*60)/(40+60)=48 km/hr.
- 12 years agoHelpfull: Yes(40) No(2)
- 48 KM/HR
40 t1 = 60 t2
t1/t2 =3/2
total distance = 120+120 =240 ,time taken 5 hrs
average speed =240/5=48
anthor method
average speed =2ab/a+b = 2*40*60/(40+60) = 48 - 12 years agoHelpfull: Yes(20) No(3)
- 48km/hr
solution:
the average speed is:(2*40*60)/(40+60)
48 - 12 years agoHelpfull: Yes(8) No(2)
- 48km/hr
let total distance=2x
avg speed=2x/(x/40+x/60)=48 km/hr - 12 years agoHelpfull: Yes(7) No(1)
- first half journey speed X=40
and second half journey speed is Y=60
then for average speed =(2*X*Y)/(X+Y)
so ans is 48kmph - 12 years agoHelpfull: Yes(6) No(1)
- speed= distance/time
speed=(40+60)/2
=50
there fore avg speed is 50km/hr - 12 years agoHelpfull: Yes(4) No(38)
- 48 km/hr
using the formula 2*x*y/x+y - 11 years agoHelpfull: Yes(0) No(0)
- avg speed= (2*40*60)/40+60
ans is 48km/hr - 11 years agoHelpfull: Yes(0) No(0)
- average speed=2*x*y/x+y
so 2*60*40/60+40
480/100=48km/h - 9 years agoHelpfull: Yes(0) No(0)
- (2*40*60)/(40+60)=(2*40*60)/100=48km/hr
- 7 years agoHelpfull: Yes(0) No(0)
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