By selling 90 pens for rs.160, a man loses 20 %. how many pens should he sell for rs.96 to make a profit of 20 %?
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SP =160 which is 80% of CP = 200
to make profit of 20% SP Should be 240.
96/240 = 36/90
He must sale 36 pens for 96 Rupees..
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