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?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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