315 marbles are distributed among x,y,z in the ratio 7:3:5, respectively. how many more marbles did y get compared to x?
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sum of RATIOS= 7+3+5=15
NO OF MARBLES x will get= 7/15×315
=147
NO OF MARBLES y will get= 3/15×315
=63
DIFFERENCE BETWEEN THEIR MARBLES=147-63=84
THEREFORE, x got 84 more MARBLES than y
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