Question

Rohan and Tanuj move towards Dehradun starting from Delhi at a speed of 30 km/h and 50 km/h respectively. If Tanuj reaches Dehradun 300 minutes earlier than Rohan, what is the distance between Delhi and Dehradun?

A 520 km Correct Answer Incorrect Answer
B 450 km Correct Answer Incorrect Answer
C 425 km Correct Answer Incorrect Answer
D 500 km Correct Answer Incorrect Answer
E None of these Correct Answer Incorrect Answer

Solution

let the distance be 'x' km then, according to the question x/30 - x/50 = 300 minutes x/30 - x/50 = 5 hours 5x-3x / 150 = 5 2x = 750 x = 375

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