Articles are marked at a price which gives a profit of 25%. After allowing a certain discount the profit reduces to $$ 12\frac{1}{2} \% $$. The discount percent is
Let the cost price be Rs.100.
So , the marked price will be Rs.125.
After allowing a certain discount the profit reduces to $$ 12\frac{1}{2} \% $$,
 price would be Rs.112.5
Discount percent offered = $$\frac{12.5}{125} \times 100 $$ = 10
So, the answer would be option b)10%.
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