Latest TCS Aptitude Question SOLUTION: an express train was running at an average speed of 100kmph stopping for 3mins after every 75kms.the time taken by the train to reach the destination at a distance of 600km is?

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an express train was running at an average speed of 100kmph stopping for 3mins after every 75kms.the time taken by the train to reach the destination at a distance of 600km is?

Asked In TCS ratna (11 years ago)

Solved lala Read Solution (7)

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lala  (11 years ago)

600/75 = 8 parts if 600 km is divided in 75 km i.e train has to stop 8 times
but at last no need to stop at a gap of 75 because train finally reaches the destination
so train only stops 7 times time spend is 7*3 = 21 minute
100 km /hr so time to travel 600 km is 6 hr + 21 minute extra
total time is 6hr+21min

Is this solution Helpfull? Yes (63) | No (1)  

snehil  (11 years ago)

75+150+......600
600=75+(n-1)*75
n=8
so train will stop at 8 places
but 8th place is destination
so number of stoppage in path=7
time spend in stoppage =3*7=21min
time to reach the destination=600/100=6hr
total time=6hr21min

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Chandra Sekar V  (11 years ago)

Yes the ans is 6 hrs 21 mins.
Sorry about my previous ans

Is this solution Helpfull? Yes (4) | No   

Reema khan  (11 years ago)

when the total journey of 600 kms is divided into intervals of 75 km 8 such intrvls are obtained... so the train stops 7 times=7*3=21 mins
time taken by the train to cover 75 km at 100 kmph=36mins
so total time for travel=36*8=288
time required to reach destination=288+21=309mins

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Chandra Sekar V  (11 years ago)

Ans 384 Mins => 6hrs 24 mins

Is this solution Helpfull? Yes (1) | No (8)  

lala  (11 years ago)

@ admin my answer is chosen but i think @reema khan answer is correct i am confused by seeing his solution please specify correct answer

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

DURGA SATISH  (11 years ago)

lala ur answr is correct for travelling 75 km it will tak 45 min
so 45*8=360
360+21=381=6hr 21min

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