Question
A train departs station 'Z' at 5:15 AM traveling at 90
km/h. Another faster train leaves the same station at 7:00 AM traveling at 120 km/h. At what time will the second train overtake the first?Solution
ATQ,
Distance between the two trains when second train starts = 90 × 1.75 = 157.5 km
Relative speed = 120 − 90 = 30 km/h
Time taken to overtake = 157.5 / 30 = 5.25 hours = 5 hours and 15 minutes
‘Required time = 7:00 AM + 5 hours 15 minutes = 12:15 PM
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