A bus leaves Delhi for Jaipur traveling at 60 km/h. Two hours later, a car starts from Delhi towards Jaipur at 90 km/h on the same route. How long will it take the car to overtake the bus, and what distance from Delhi will the car meet the bus?
4 hours, and 360 km
In 2 hours the bus is ahead by 60 × 2 = 120 km when the car starts.
Relative speed of the car over the bus = 90 − 60 = 30 km/h, so the car closes the 120 km gap in 120/30 = 4 hours.
Distance from Delhi where they meet = 90 × 4 = 360 km.
Hence, the answer is 4 hours, and 360 km.
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