10. Two trains start from the same station at 11 p.m. in opposite directions at speeds of 72 km/hr and 63 km/hr respectively. At what time they will be 810 km apart??
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Consider the following question.
Time =
Relative Velocity
Relative Distanc
=
(72 kmph + 63 kmph)
(810 km)
= 6 hours
They’ll be 810 kmfrom start. 6hr
In other words, they’ll be 810km apart at 05:00AM
Hence, this is the required answer.
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