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चीनी की कीमत में 20% की कमी हो जाती है, लेकिन प्रतिदिन उसकी बिक्री 30% बढ़ जाती है । तो प्रतिदिन की आय पर क्या अंतर होगा ?
A. `2(1)/(2)%` increase
B. `2(1)/(2)%`decrease
C. 2% increase
D. 2% decrease

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Correct Answer - b
(b) `25%1/4," "30%=3/10`
image
% decrease `=1/40xx100`
`=2(1)/2%` decrease,

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