020. A Car travelling at 60km/hr left Dehradun at 3 pm. One hour later another car travelling at 80 km/hr started
from the same point and on the same road to overtake the first car. How long must the second car travel to do so?
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Step-by-step explanation:
Hence, the second car travelled in 3 hours to overtake the 1st car . → Therefore, time taken by second car to overtake the first car = 80x = 80 × 3 = 240 km
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