If \( x: y=3: 5 \), find the duplicate ratio of \( (3 x+y) \) \( :(5 x-\gamma) \). (a) \( 49: 25...

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If \( x: y=3: 5 \), find the duplicate ratio of \( (3 x+y) \)
\( :(5 x-\gamma) \).
(a) \( 49: 25 \)
(b) \( 25: 9 \)
(c) \( 36: 25 \)
(d) \( 49: 36 \)
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