एक आदमी ने 5रु/दरजन के दर से 10 दरजन केले खरीदे•20 केले सड़ गए शेष केलो को वह किस दर से बेचे की उसे 20% का लाभ हो।
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10 dozen = 12 × 10 = 120
cp = 5 × 120 = 600
sp of 100 bananas = ? so gain % = 20%
sp = cp × (100 + p%)/100
= 600 × (120)/100 = 600 × 12 = 720
sp of 1 banana = 720/100 = 7.2
cp = 5 × 120 = 600
sp of 100 bananas = ? so gain % = 20%
sp = cp × (100 + p%)/100
= 600 × (120)/100 = 600 × 12 = 720
sp of 1 banana = 720/100 = 7.2
ram071987:
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