(i) Increase 180 by 25%. (ii) Decrease 140 by 18%.
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(i)180+(180*25%)
=180+{180*(25/100)}
=180+45
=225
(ii)140-(140*18%)
=140-{140*(18*100)}
=140-25.2
=114.8
=180+{180*(25/100)}
=180+45
=225
(ii)140-(140*18%)
=140-{140*(18*100)}
=140-25.2
=114.8
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