A trader bought 30 articles. He sold 20 of them at a gain of 16% and sold the remainder at a loss of 4%. Find the percentage profit/loss on the articles

A trader bought 30 articles. He sold 20 of them at a gain of 16% and sold the remainder at a loss of 4%. Find the percentage profit/loss on the articles
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If all the articles are at the same price and each costs C, then the cost price is 30C.

The selling price is 20C(1+16/100)+10C(1-4/100)=20C*1.16+10C*0.96=(23.20+9.60)C=32.80C.

Percentage profit/loss=(32.80C/30C*100)-100=3280/30-100=9.33%.
by Top Rated User (1.1m points)

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