P and Q are two examination halls. If 10 examinees are sent from P into Q, the number of examinees becomes equal in both the halls. If 20 examinees are transferred from Q into the number of examinees becomes double in P in comparison with Q. What is the number of examinees in each P and Q separately ?
Solution
Since by sending 10 candidates from P into Q, they become equal, the difference between P and Q is 20. Let P have x and Q have "x-20" candidates. But 2*( "x-20" -20) = x+20
So, x = 100 candidates.
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