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Two boys start walking from P and Q at the speed of 15 km/hr and 45 km/hr towards Q and P respectively . When they meet it was found that one boy has moved 60 km more than the other boy . What is the distance between P and Q ?1. 150 km2. 250 km3. 120 km4. 300 km5. 375 km |
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Answer» Correct Answer - Option 3 : 120 km The one whose speed is more will move a larger distance i.e. Q will move larger. Let P moves x km before they meet so , Q will move (x + 60) km Time taken by P = Time taken by Q (Distance / speed )P = (Distance / speed )Q x/15 = (x + 60)/45 ⇒ x = 30 km Total distance between P and Q = x + x + 60 = 30 + 30 + 60 = 120 km |
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