Two stations P and Q are 130 km apart. One train starts from P at 9.30 a.m. and travels towards Q at 40 km/hr. another train starts from Q at 10.30 a.m. and travels towards P at a speed of 50 km/hr. at what time will they meet ?
suppose they meet x hours after 9.30 a.m.
distance covered by P in x hours = 40x km.
distance covered by Q in (x -1) hours = 50(x - 1) km.
.'. 40x + 50(x - 1) = 130 <=> 90x = 180 => x = 2 hours.
So, they meet at 11.30 a.m.
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