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Practice #37,885
Q
तीन छात्रों की औसत आयु 20 वर्ष है तथा इनकी आयुओं का अनुपात 3 : 5 : 7 है तो सबसे बड़े छात्र की आयु कितनी है ? [The average age of three students is 20 years and the ratio of their ages is 3 : 5 : 7, then what is the age of the eldest student?]
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