315 marbles are distributed among Aman, Ashok and Alok in the ratio 7 : 3 : 5, respectively. How many more marbles did Aman get compared to Ashok?
Total marbles = 315
Ration among Aman : Ashok : Alok = 7y : 3y : 5y
15y = 315
y = 21
4y = 84 (More Marbles Aman get compared to Ashok.)
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