Answer Posted / m.r.subramanya sastry

I
Consider Rs 100 as marked price.
Selling price SP with 25% discount is 100-25=75Rs
SP with 10% discount is Rs90
II Finding Cost price CP
If 100Rs is CP and profit is 25% the SP=125Rs
for 25% profit: if sp is 125Rs CPis 100Rs
Sp is 75Rs CP is = (100x75)/125
=Rs60

Now the Profit with 10% discount=SP-CP
=90-60=30Rs
% Profit= (Profit/CP)100
=(30/60)100= 50%

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