allery48 ವಿದ್ಯಾರ್ಥಿಗಳಲ್ಲಿ, ಹುಡುಗರ ಸರಾಸರಿ 64, ಹುಡುಗಿಯರು 76, ಎಲ್ಲಾ 69 ಅಂಕಗಳು. ಹುಡುಗಿಯರ ಸಂಖ್ಯೆ?
A28
B18
C16
D20
Answer & Solution
Correct answer: D. 20
g ಎಂಬುದು ಹುಡುಗಿಯರ ಸಂಖ್ಯೆ ಆಗಿದ್ದರೆ, 64(48 - g) + 76g = 69 × 48 g = 20 ನೀಡುತ್ತದೆ.
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