Two trains start from P and Q respectively and travel towards each other at a speed of 50 km/hr and 40 km/hr respectively. By the time they meet, the first train has traveled 100 km more than the second. The distance between P and Q is :
At the time of meeting, let the distance traveled by b the second train be x km. Then,
distance covered by the first train is (x + 100) km
=> x/40 = (x+100)/50
=> 50x = 40x 4000
=> x = 400.
So, distance between P and Q = (x+x+100) km
= 900 km.
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