Latest TCS Aptitude Question SOLUTION: Car A leaves city C at 5pm and is driven at a speed of 40 kmph. Two hours later another car leaves city C and is driven in same direction as car A. In how much time car B be 9 km

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(#M40024507) TCS Numerical Ability question time and speed Keep an EYE

Car A leaves city C at 5pm and is driven at a speed of 40 kmph. Two hours later another car leaves city C and is driven in same direction as car A. In how much time car B be 9 km ahead of car A if the speed of car B is 60 kmph.

Asked In TCS nikhil pande (11 years ago)

Solved Sruthi karuturi Read Solution (21)

Is this Puzzle helpful?   (59)   (11) Submit Your Solution Time Distance and Speed

Read Solution (21) :

sakshi sahni  (11 years ago)

car A speed = 40 kmph, car B speed 60 kmph
relative speed=60-40=20 kmph(same direction)
when car B stated A has already covered 40*2=80m distance
time required for two car to be at same position = 80/20=4hr
additional distance is 9 min
to additional time= (9/20)*60=27 min
answer is 4grs 27 min

Is this solution Helpfull? Yes (69) | No (5)  

Sruthi karuturi  (11 years ago)

after 4hrs they will meet together.From that there should be distance of 9kms b/w them. Hence the time=distance/relative speed. t=9/20=27min.So the total time taken is 4hrs+27min=4hrs27mins.

Is this solution Helpfull? Yes (32) | No (2)  

Yati Sawhney  (11 years ago)

Sorry guys ans will be (4 hrs 27 mins)

Is this solution Helpfull? Yes (9) | No (5)  

Sruthi karuturi  (11 years ago)

after 4hrs they will meet together.From that there should be distance of 9kms b/w them. Hence the time=distance/relative speed. t=9/20=27min.So the total time taken is 4hrs+27min=4hrs27mins.

Is this solution Helpfull? Yes (9) | No (1)  

Amit sahu  (11 years ago)

relative speed is 20.
then in 2 hr dist covered by a 80.
time taken by b to cover 80 is 80/60=1hr 20 min
and to cover 9 km more =9/20=27min
total time=1hr 47min

Is this solution Helpfull? Yes (5) | No (10)  

Ravi kushwah  (11 years ago)

a and b meet after 80/20=4 hour + 9km/20=27min ...total 4hr 27min

Is this solution Helpfull? Yes (5) | No   

spandana  (11 years ago)

relative speed is 20
and when b started A is 80KM ahead
time required for b to be ahead of A by 9Km=(80+9)/20
=4 hrs 27 mins

Is this solution Helpfull? Yes (3) | No (3)  

parminder maan  (11 years ago)

can anyone xplain

Is this solution Helpfull? Yes (2) | No   

Yati Sawhney  (11 years ago)

1 hour 29 mins

Is this solution Helpfull? Yes (1) | No (7)  

AAKASH MISHRA  (11 years ago)

21 hrs b started 2 hrs later, so after 21 hrs the difference will be 9 km between them

Is this solution Helpfull? Yes (1) | No (5)  

Guru Pranav  (11 years ago)

4 hours and 27 minutes later !!!

Is this solution Helpfull? Yes (1) | No   

swaroop  (10 years ago)

Relative speed 60 - 40 20 kmphInitial gap as car B leaves after 2 hours 40 x 2 80 kmsCar B should be 9 km ahead of the A at a required time so it must be 89 km awayTime 89 20 445 hrs or 267 mins

Is this solution Helpfull? Yes (1) | No (1)  

rohit shaw  (9 years ago)

first we will calculate the distance travel by car A in two hours i.e. 80 km. now their relative speed is 20 kmph and distance will be 89 km. so car B will be ahead of car A in (89/20) = 4.45 hrs.

Is this solution Helpfull? Yes (1) | No   

abhay  (11 years ago)

ans is 4hr 15 min

Is this solution Helpfull? Yes | No (2)  

rohin  (11 years ago)

after car a and b starts they meet at a point 240km from the start(40kmph*6=60kmph*4).so car b takes 4hrs to meet a.so to travel 9km ahead we take the relative vel..ie.(60-40)kmph..so time taken is (9/20)*60=0.47*60=27min..so b take 4hrs 27min

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Nitish kumar  (11 years ago)

.15h
9/60=.15

Is this solution Helpfull? Yes | No (1)  

Ajay Poshak  (11 years ago)

Let after t time two cars will met.
So A will travel distance of 40t with 40kmph
B will travel the distance of 60t with 60kmph
And also A is ahead 80 km(40*2=80) from B
so 60t - 40t = 80 => t = 4hrs
and time taken by B to cover 9kms more is 9/60 = 9mins
So the total time is 4 hours 9 mins

Is this solution Helpfull? Yes | No (1)  

Yadav Chevula  (9 years ago)

car A speed = 40 kmph,
car B speed 60 kmph
relative speed=60-40=20 kmph(same direction)
when car B stated A has already covered 40*2=80m distance
two cars are meet together ::::80/20=4hr
additional distance is 9 min
to additional time= (9/20)*60=27 min
so correct answer = 4hrs 27 min

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SURABHI SRIVASTAVA  (9 years ago)

twice distance over so 2*40 now relative speed is 20
t=80/20=4 hrs
now given 20 km in 1 hrs
so in 9 km it will be 9/20 convert in min by 60
we get 4hrs 27min.

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SAI PRATHIMA RAMAIAHGARI  (8 years ago)

A=40kmph
B=60kmph
relative speed=60-40=20
in 2hrs A covered 80km
time required to meet 2 cars=80/20=4hr
9 km more in the sense =(9/20)*60=27min
==4h27min

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Nishant kumar  (6 years ago)

Relative speed of car b=20kmph
in two hrs distance traveled by car A=50x2=80
Time taken to reach car A by Car B=80/20=4hrs
Time taken to travel 9 km extra with respect car A=9/20=27min
So required time=4hr and 27 minutes

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