SOLUTION: rajan purchased a purse at 25%discount on its marked price but sold it at the marked price. find the gain percent of rajan on this transaction.

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We consider:

Marked Price-25%*Marked price= Rajan Purchased Price (RPP)
marked Priced(1-0.25)= RPP
Marked Price(0.75)=RPP
In theory, Purchased Price is 75% of Marked Price

Gain Percent= Marked Price-RPP
GP=Marked Price-Marked price(0.75)
GP=Marked Price (1-0.75)
GP=Marked Price(0.25)
In theory, Gain Percent is 25% -------------> his discount
thank you,
Jojo