Latest TCS Aptitude Question SOLUTION: A man goes upstream for a distance of 10 kms in 5 hours. Another man goes downstream for the same distance of 10kms in 3 houes. what is the difference of the speeds of the two men

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A man goes upstream for a distance of 10 kms in 5 hours. Another man goes downstream for the same distance of 10kms in 3 houes. what is the difference of the speeds of the two men if the river speed is 0.5 Kms. (Round the answer to two decimals).)

Options:
A. 2.45
B. 1.56
C. 2.3
D. 1.33

Asked In TCS Varsha (10 years ago)

Unsolved Read Solution (12)

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Read Solution (12) :

Nomendra Sinha  (10 years ago)

(10/5)=A-(1/2)
A=5/2

(10/3)=B+(1/2)
B=17/6

B-A=0.33

Is this solution Helpfull? Yes (28) | No (6)  

amit tiwari  (10 years ago)

speed for 1st person=2 m/s ,speed for 2nd person=3.33 m/s.for upstream=2+0.5=2.5
for downstream=3.33+0.5=3.83.then diff=3.83-2.5=1.33
so ans=1.33

Is this solution Helpfull? Yes (12) | No (17)  

kundan kumar  (10 years ago)

let velocity of first man be A & velocity of second man be B
10/5=A-0.5 ......(1)
10/3=B+0.5 .....(2)
SOLVING (1)&(2)
we get B-A=2.33
ANS:2.33

Is this solution Helpfull? Yes (9) | No (15)  

Sayandip Dey  (10 years ago)

speed of the person going upstream=(10/5)-0.5=1.5km/hr
" " " " " downstream=(10/3)+0.5=3.83km/hr
so,difference is= 3.83 - 1.5 =2.33 km/hr.

Is this solution Helpfull? Yes (7) | No (6)  

Pallabi Basu  (10 years ago)

(10/3 + .5)-(10/5 - .5)
=1.33
correct ans

Is this solution Helpfull? Yes (4) | No (1)  

anchal gupta  (10 years ago)

ans 0.33
not in option
if we tick any option then will it be go in the negative marking?
plzzz tell me

Is this solution Helpfull? Yes (3) | No   

MUNISH YADAV  (10 years ago)

m1-0.5=2 or m1=2.5
m2+0.5=3.33 or m2=2.83
|m1-m2|=0.33
That's not in the options !!!

Is this solution Helpfull? Yes (2) | No   

Chirag Ranjan Lahiri  (10 years ago)

(10/5)=A-(1/2)
A=5/2
(10/3)=B+(1/2)
B=17/6
B-A=0.33

Is this solution Helpfull? Yes (1) | No   

souvik saha  (10 years ago)

ans- 1.33
bcoz, here the speed of both the persons u r calculating includes the upstream and downstream speeds as given in the question.. so 1st persons speed = 2km/hr (10/5) and 2nd persons speed = 3.33km/hr(10/3) .. as i have said before in the sum the speed of both the persons u have calculated is not the speed in still water so both of the speeds will be added with the stream speed i.e
1st person =2+0.5=2.5km/hr
2nd person=3.33+0.5=3.83km/hr
therefore difference= 3.83-2.5=1.33 km/hr

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

sandeep kumar  (9 years ago)

Ans is 2.3

speed in upstream is given by 10/5=2

speed in down stream is given by 10/3=3.33

now speed in down stream when river speed v=0.5 is given is u+v =3.33+0.5=3.8

speed in upstream is u-v= 2-0.5=1.5

now diff is 3.8-1.5=2.3

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

SOURADIP DUTTA  (10 years ago)

ans is 9..as 9 no of 5 is present.

Is this solution Helpfull? Yes | No (1)  

Swapnali Pawar  (9 years ago)

dist=speed*time
10=(A-.5)*5
10=(B+.5)*3
A=12.5/5
B=11.5/3
B-A=4/3=>1.33(D)

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