Question

If a train runs at 60 km per hour it reaches its destination late by 30 minutes but if it travels at a speed of 80 km per hour it reaches its destination 30 minutes early, Find the correct time taken by the train to complete it's journey ​

Answer 1

Answer:

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Answer 2

Step-by-step explanation:

let the correct time be t hour.

and distance between the destination be d km.

eq. no 1

distance =speed ×time.

d=60×(t+1/2)..........(1).

eq. no 2

d=80×(t-1/2)...........(2)

from eq 1 and 2

t=7/2 hour.