A set was sold at a profit of 7% if it had been sold at profit of 10% the profit would have been Rs780 more What is its C.P.
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from question its clear that Rs780 equals (7%+10%)
hence 17%of cp equals 780
or cp=(780*100)/17
cp=4000
hence 17%of cp equals 780
or cp=(780*100)/17
cp=4000
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