O is the centroid cuts median at 2 : 1 
PM : OM = 3 : 1 Alternate Method: 
∆’s are ~ then median ratio 3 : 1
The total age of 'R' and 'D' eight years ago was thirty-six. Four years separate 'R' and 'D' in age. Determine the total age difference (in years) betwe...
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Three bells ring at interval of 36 seconds, 40 seconds and 48 seconds respectively. They start ringing together at a particular time. They will ring tog...
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