1.

Calculate the difference in the original time taken as given above in condition to meet train A and B and the time taken by train B to catch train A if the train A had started in same direction as that of B . Train B had started in same direction started 2 hrs after train A while going insame direction .

Answer»

45 hrs 40 min.
24 hrs 20 min.
55 hrs . 30 min.
49 hrs . 45 min.

Solution :
In `(1)/(2)` H train A will cover = 27 km
Distance between P and Q
`= (480 + 40 + 27)` km
= 27 + 520
= 547 km
Total time taken in given condition
`= ((1)/(2) + (13)/(3)) h = (29)/(6) h`
New time taken according to condition
`(547 + 2 XX 54)/((66-54))`
`= (655)/(12) h`
Required difference in time = `(655)/(12) - (29)/(6) = (597)/(12)`
= 49 HOUR 45 min.


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