distance between Khragpur and Howrah is 120kms one train from Khragpur and one train from Howrah move towards each other with speed 45kms/hr and 60kms/hr respectively what will be the distance of the trains after 30mins?
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Answered by
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30 min= 30/60 hr.=1/2hr
in 1 hour they cover =(45+60)km
=105 km. so in 1/2 hr they travel=105/2 km.
52.5 km. after 30 min distance=(120-52.5)km=67.5km(ans)
in 1 hour they cover =(45+60)km
=105 km. so in 1/2 hr they travel=105/2 km.
52.5 km. after 30 min distance=(120-52.5)km=67.5km(ans)
Answered by
1
52.5
BOTH THE TRAINS HAVE TRAVELED FOR 30 MIN I.E. HALF OF WHAT THEY WILL TRAVEL IN 1 HOUR.
TOTAL DISTANCE TRAVELED BY BOTH TRAINS IN ONE HOUR= 105KM
TOTAL DISTANCE TRAVELED BY BOTH TRAINS IN 30 MIN= HALF OF 105=52.5KM
ALTERNATIVE:
DISTANCE TRAVELED BY TRAIN FROM KHRAGPUR: (30/60)*45 =22..5km
DISTANCE TRAVELED BY TRAIN FROM KHRAGPUR: (30/60)*60 =30.0 km
TOTAL DISTANCE =52.5km
NOTE: SEPED IS 45KM/HR MEANS TRAIN TRAVELS 45 KM IN 60 MIN.
BOTH THE TRAINS HAVE TRAVELED FOR 30 MIN I.E. HALF OF WHAT THEY WILL TRAVEL IN 1 HOUR.
TOTAL DISTANCE TRAVELED BY BOTH TRAINS IN ONE HOUR= 105KM
TOTAL DISTANCE TRAVELED BY BOTH TRAINS IN 30 MIN= HALF OF 105=52.5KM
ALTERNATIVE:
DISTANCE TRAVELED BY TRAIN FROM KHRAGPUR: (30/60)*45 =22..5km
DISTANCE TRAVELED BY TRAIN FROM KHRAGPUR: (30/60)*60 =30.0 km
TOTAL DISTANCE =52.5km
NOTE: SEPED IS 45KM/HR MEANS TRAIN TRAVELS 45 KM IN 60 MIN.
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