Two cars start from the same point at the same time towards the same…
TCS · 2026
Two cars start from the same point at the same time towards the same destination which is 420 km away. The first and second car travel at respective speed of 60 kmph and 90 kmph. After travelling for sometime the speeds of the two cars get interchanged. Finally the second car reaches the destination 1 hour earlier than the first . Find the time after which the speeds get interchanged ?
- A.
3 hr
- B.
4 hr
- C.
3.5 hr
- D.
4.5 hr
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