alleryಸಂಖ್ಯೆಯನ್ನು ಮೊದಲು 20% ಹೆಚ್ಚಿಸಲಾಗಿದೆ ಮತ್ತು ನಂತರ 20% ಕಡಿಮೆ ಮಾಡಲಾಗಿದೆ. ನಿವ್ವಳ ಬದಲಾವಣೆಯಾಗಿದೆ
A4% ಇಳಿಕೆ
B4% ಹೆಚ್ಚಳ
Cಯಾವುದೇ ಬದಲಾವಣೆ ಇಲ್ಲ
D2% ಇಳಿಕೆ
Answer & Solution
Correct answer: A. 4% ಇಳಿಕೆ
** ಅನುಕ್ರಮ ಶೇಕಡಾವಾರು ಬದಲಾವಣೆ:** a + b + ab/100 = 20 + (-20) +
(20)(-20)/100 = -4%.
ಸಮಾನವಾಗಿ, 1.20 x 0.80 = 0.96 = 4% ಇಳಿಕೆ.
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