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Question

Q. The average age of Manu, Nandini and Sona 3 years ago was 27 years and that of Nandini and Sona 5 years ago was 20 years. The present of age of Manu is: Q. 3 वर्ष पूर्व मनु, नंदिनी और सोना की औसत उम्र 27 साल थी, वहीं 5 वर्ष पूर्व नंदिनी और सोना की औसत आयु 20 साल थी। तो मनु की वर्तमान आयु क्या है ?

A

40 years
40 साल
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B

42 years
42 साल
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C

47 years
47 साल
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D

50 years
50 साल
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Solution

The correct option is A 40 years 40 सालSum of the present ages of Manu, Nandini and Sona =(27×3)+(3×3)=90 years Sum of the present ages of Nandini and Sona =(20×2)+(5×2)=50 years Thus, The present age of Manu =90−50=40 years मनु, नंदिनी और सोना की वर्तमान आयु का योग =(27×3)+(3×3)=90 वर्ष नंदिनी और सोना की वर्तमान आयु का योग =(20×2)+(5×2)=50 वर्ष इस प्रकार, मनु की वर्तमान आयु =90−50=40 वर्ष है

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