Latest GENPACT Aptitude Question SOLUTION: In a kilometre race, A can give B a start of 100 m or 15 seconds. How long does A take to complete the race?

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In a kilometre race, A can give B a start of 100 m or 15 seconds. How long does A take to complete the race?

Asked In GENPACT (13 years ago)

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Rahul kumar singh  (13 years ago)

100 m = 15 sec
1 m = 15/100 sec
1000 m = 15/100*1000
=150 sec
=2min 30 sec

Is this solution Helpfull? Yes (38) | No (7)  

Rahul kumar singh  (13 years ago)

100 m = 15 sec
1 m = 15/100 sec
1000 m = 15/100*1000
=150 sec
=2min 30 sec+ 15 sec(start given by a to b)
=2min 45 sec

Is this solution Helpfull? Yes (19) | No (5)  

Shashi Kant  (12 years ago)

135seconds

150-15=135 sec

Is this solution Helpfull? Yes (15) | No (4)  

PARVY GOVIL  (11 years ago)

A HAS GIVEN B A START OF 100M OR 15 SEC IMPLIES A CAN COVER 100M IN 15 SEC.
A'S SPEED= 100/15 m/sec( DIST/TIME).
thus time to cover 1000m = dist/speed= (1000/100)*15 sec=150 seconds.

Is this solution Helpfull? Yes (3) | No   

Sunil Kumar Ranwan  (11 years ago)

135 sec,
(v1*t)/(v2*t)=1000/900 ...1,(v1*t)/(v2*t+15)=d/d...2,from eq. 1&2
t+15/t=1000/900,t=135 sec

Is this solution Helpfull? Yes (1) | No (2)  

SUJITHA  (10 years ago)

In a 1000 metre race A gives B a start of 100 m or 15 seconds.

This essentially means that B takes 15 seconds to run 100 m.

Therefore, B will take 150 seconds to run the stretch of 1000 metres. (1000 m = 10 times 100 m and therefore the time taken will also be 10 times 15 seconds = 150 seconds).

As A gives B a start of 15 seconds, A obviously takes 15 seconds less than B to complete the race.

Hence, A will take 135 seconds to run the 1000 m.

Is this solution Helpfull? Yes (1) | No   

sindhubaddi  (12 years ago)

for 100m----- 15 sec
1 m ----?
= 15/100 =0.15
so for 1000m it takes 0.15*1000 =150 sec
so a takes 150+15 sec= 165 sec= 2 min 75 sec

Is this solution Helpfull? Yes | No (15)  

kartheek  (11 years ago)

for 100m----- 15 sec
1 m ----?
= 15/100 =0.15
so for 1000m it takes 0.15*1000 =150 sec
so a takes 150+15 sec= 165 sec= 2 min 75 sec

Is this solution Helpfull? Yes | No (4)  

Rajkumari  (11 years ago)

100m =15 sec
1km =1000m
therefore ans is 1000m=150 sec

Is this solution Helpfull? Yes | No (3)  

DEBOJYOTI  (9 years ago)

100m=15sec
1000m=1000*(15/100)
=150 sec
=2 min 30 sec

Is this solution Helpfull? Yes | No   

Subhayan Das  (9 years ago)

100 m = 15 sec
1 m = 15/100 sec
1000 m = 15/100*1000
=150 sec
=2min 30 sec

Is this solution Helpfull? Yes | No   

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